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Telescopic Tubing Locks

Telescopic tubing locks offer infinite adjustability. Use with Testrite's telescopic aluminum tubing, or use with other tubing.

These telescopic tubing clamps are designed to allow one tube to telescope inside of another tube. They're designed to both lock a tube in a specific position, as well as to reduce the play between the inside and outside tube.

We offer round telescoping tubing clamps for use with round tubing as well as for square telescopic tubing clamps for square tubing in the sizes specified below.

These telescopic tubing locking mechanisms have been used in a wide variety of applications, from locks for telescopic IV stands, to hunting, visual displays to mining, and more. When paired with compatible tubing, these enable you to make a locking telescoping pole with these telescoping locking mechanisms. Our aluminum tube fittings can be used with a range of sizes for telescoping one tube inside another. Our B Lock and L Lock can also be used as a telescopic steel tube fitting.

Jump down to our Frequently Asked Questions for more information.

Unlock the next level of versatility with Testrite Aluminum’s Tubing Locks, expertly engineered to provide infinite adjustability, exceptional locking strength, and seamless telescoping performance. Ideal for industries such as medical stand design, outdoor hunting and fishing, visual merchandising, and custom fabrication. Discover how Testrite’s legacy of engineering and innovation can elevate your telescopic projects. 

What Makes Testrite Tubing Locks Stand Out:

  • Unrivaled Adjustability
    Designed so one tube slides effortlessly into another and locks securely in any position, reducing unwanted play while offering precision movement (Testrite Aluminum).
  • Extensive Compatibility & Variety
    Choose from a wide range of options—B Split Collar Locks, L Lever Locks, G Snap Locks, Square Tubing Locks, EMT Locks, and compact Mini Locks, all compatible with both Testrite’s telescopic aluminum tubing and other supplier tubing.
  • Real‑World Reliability & Applications
    Trusted across industries—from telescoping IV stands and visual display systems to outdoor and mining setups—Testrite tubing locks have been used to provide durability in even the toughest environments.
  • Engineered for Strength and Ease
    • B Split Collar Locks are built for maximum stiffness and strength, supporting both aluminum and steel tubing.
    • L Lever Locks offer rugged one‑handed operation and were recently updated with stainless steel hardware and reinforced plastic.
  • The First Infinitely Adjustable Square Telescopic Lock
    A landmark innovation unveiled in 2020, this square tubing lock allows infinite locking positions in eighth‑inch increments—drastically reducing play and enabling precise customization.
B Telescopic Tubing Lock with Stainless Steel Hardware 1-1/2" to 1-3/8", 1.5" to 1.375" tube clamp B Lock Telescopic Tubing Clamp for 1-3/8" to 1-1/2" OD tubing, 1.375" to 1.5"
B Split Collar Lock 1-3/8" OD to 1-1/2" OD
B Telescopic Tubing Lock with Stainless Steel Hardware 1-3/8" to 1-1/4", 1.375" to 1.25" tube clamp B Lock Telescopic Tubing Clamp for 1-1/4" to 1-3/8" OD tubing, 1.25" to 1.375"
B Split Collar Lock 1-1/4" OD to 1-3/8" OD
B Telescopic Tubing Lock with Stainless Steel Hardware 1-1/4" to 1-1/8", 1.25" to 1.125" tube clamp B Lock Telescopic Tubing Clamp for 1-1/8" to 1-1/4" OD tubing, 1.125" to 1.25"
B Split Collar Lock 1-1/8" OD to 1-1/4" OD
B Telescopic Tubing Lock with Stainless Steel Hardware 1-1/8" to 1", 1.125" to 1" tube clamp B Lock Telescopic Tubing Clamp for 1" to 1-1/8" OD tubing, 1" to 1.125"
B Split Collar Lock 1" OD to 1-1/8" OD
B Telescopic Tubing Lock with Stainless Steel Hardware 1" to 7/8", 1" to 0.875" tube clamp B Lock Telescopic Tubing Clamp for 7/8" to 1" OD tubing, 0.875" to 1"
B Split Collar Lock 7/8" OD to 1" OD
B Telescopic Tubing Lock with Stainless Steel Hardware 7/8" to 3/4", 0.875" to 0.75" tube clamp B Lock Telescopic Tubing Clamp for 3/4" to 7/8" OD tubing, 0.75" to 0.875"
B Split Collar Lock 3/4" OD to 7/8" OD
B Telescopic Tubing Lock with Stainless Steel Hardware 3/4" to 5/8", 0.75" to 0.625" tube clamp B Lock Telescopic Tubing Clamp for 5/8" to 3/4" OD tubing, 0.625" to 0.75"
B Split Collar Lock 5/8" OD to 3/4" OD
B Lock Telescopic Tubing Clamp for 1/2" to 5/8" OD tubing, 0.5" to 0.625" B Split Collar Lock 1/2" to 5/8", 0.5" to 0.625" Telescopic tubing clamp
B Split Collar Lock 1/2" OD to 5/8" OD
B Lock Telescopic Tubing Clamp for 1-1/4" to 1-1/2" OD tubing, 1.25" to 1.5" B Split Collar Lock 1-1/4" OD to 1-1/2" OD
B Split Collar Lock 1-1/4" OD to 1-1/2" OD
B Lock Telescopic Tubing Clamp for 1" to 1-1/4" OD tubing, 1" to 1.25" B Split Collar Lock 1" OD to 1-1/4" OD
B Split Collar Lock 1" OD to 1-1/4" OD
B Lock Telescopic Tubing Clamp for 3/4" to 1" OD tubing, 0.75" to 1" B Split Collar Lock 3/4" OD to 1" OD
B Split Collar Lock 3/4" OD to 1" OD
L Lock Telescopic tubing lock clamps 1-3/8" tube inside tube in a 1-1/2" outer tube, stainless hardware, L Lever Lock, round tubing clamp adjustable 1.5" to 1.375" L Lock sizing diagram for 1-1/2" to 1-3/8" Tubing
L Lever Lock 1-3/8" to 1-1/2" Telescopic Tube Clamp
L Lock Telescopic tubing lock clamps 1-1/4" tube inside tube in a 1-3/8" outer tube, stainless hardware, L Lever Lock, round tubing clamp adjustable 1.25" to 1.375" L Lock 1.375" to 1.25"
L Lever Lock 1-1/4" to 1-3/8" Telescopic Tube Clamp
L Lock Telescopic tubing lock clamps 1-1/8" tube inside tube in a 1-1/4" outer tube, stainless hardware, L Lever Lock, round tubing clamp adjustable 1.25" to 1.125" Telescopic tubing clamp 1-1/4" to 1-1/8", 1.25" to 1.125" telescopic tubing flip clamp lock
L Lever Lock 1-1/8" to 1-1/4" Telescopic Tube Clamp
L Lock Telescopic tubing lock clamps 1" tube inside tube in a 1-1/8" outer tube, stainless hardware, L Lever Lock, round tubing clamp 1.125" to 1", 1" round tubing adjustable clamp lock snap lock Specification sheet for LLOCK1000-1125, Telescopic Tubing Lock for 1" to 1-1/8" Round Tubing Extension Clamp
L Lever Lock 1" to 1-1/8" Telescopic Tube Clamp
L Lock Telescopic tubing lock clamps 7/8" tube inside tube in a 1" outer tube, stainless hardware, L Lever Lock, round tubing clamp 1" to 0.875", 1" round tubing adjustable clamp lock snap lock Telescopic tubing clamp 1" to 7/8", 1in to 0.875" telescopic tubing flip clamp lock tubing clamp
L Lever Lock 7/8" to 1" Telescopic Tube Clamp
L Lock Telescopic tubing lock clamps 3/4" tube inside tube in a 7/8" outer tube, stainless hardware, L Lever Lock, round tubing clamp 0.75" to 0.875", round tubing adjustable clamp lock snap lock Telescopic tubing clamp 7/8" to 3/4", 0.875" to 0.75" telescopic tubing flip clamp lock
L Lever Lock 3/4" to 7/8" Telescopic Tube Clamp
L Lock Telescopic tubing lock clamps 5/8" tube inside tube in a 3/4" outer tube, stainless hardware, L Lever Lock, round tubing clamp adjustable 0.75" to 0.625" Telescopic tubing clamp 3/4" to 5/8", 0.75" to 0.625" telescopic tubing flip clamp lock
L Lever Lock 5/8" to 3/4" Telescopic Tube Clamp
G Snap Lock Telescopic Tubing Clamp for round tubing 1-3/8" to 1-1/2" OD tubing, 1.375" to 1.5" G Snap Lock Telescopic Tubing Clamp for round tubing 1-3/8" to 1-1/2" OD tubing, 1.375" to 1.5" with tubing drawn
G Snap Lock 1-3/8" OD to 1-1/2" OD
G Snap Lock Telescopic Tubing Clamp for round tubing 1-1/4" to 1-3/8" OD tubing, 1.25" to 1.375" G Snap Lock Telescopic Tubing Clamp for round tubing 1-1/4" to 1-3/8" OD tubing, 1.25" to 1.375"
G Snap Lock 1-1/4" OD to 1-3/8" OD
G Snap Lock Telescopic Tubing Clamp for round tubing 1-1/8" to 1-1/4" OD tubing, 1.125" to 1.25" G Snap Lock Telescopic Tubing Clamp for round tubing 1-1/8" to 1-1/4" OD tubing, 1.125" to 1.25" with tubing drawn
G Snap Lock 1-1/8" OD to 1-1/4" OD
1" to 1-1/8" Round Telescopic Tubing Snap Lock 1in to 1.125" G Lock Spec sheet 1" to 1-1/8", telescopic tubing clamp 1" to 1.125"
G Snap Lock 1" OD to 1-1/8" OD
7/8" to 1" Round Telescopic Tubing Snap Lock 0.875" to 1" 1in G Lock Spec sheet 7/8" to 1", telescopic tubing clamp 0.875" to 1" 1in
G Snap Lock 7/8" OD to 1" OD
3/4" to 7/8" Round Telescopic Tubing Snap Lock G Lock Spec sheet 3/4" to 7/8", telescopic tubing clamp 0.75" to 0.875"
G Snap Lock 3/4" OD to 7/8" OD
5/8" to 3/4" Round Telescopic Tubing Snap Lock G Lock Spec sheet 5/8" to 3/4", telescopic tubing clamp 0.625" to 0.75"
G Snap Lock 5/8" OD to 3/4" OD
1/2" to 5/8" Round Telescopic Tubing Snap Lock G Lock Spec sheet 1/2" to 5/8", telescopic tubing clamp 0.5" to 0.625"
G Snap Lock 1/2" OD to 5/8" OD
Square telescopic tubing lock 7/8" to 1" square 0.875" to 1" square telescopic tubing lock plastic Specification Sheet for Square telescopic tubing lock 7/8" to 1" square 0.875" to 1" square telescopic tubing lock plastic
Square Tubing Telescopic Snap Lock 7/8" OD to 1" OD
Square telescopic tubing lock 3/4" to 7/8" square 0.75" to 0.875" square telescopic tubing lock plastic Specification Sheet for Square telescopic tubing lock 3/4" to 7/8" square 0.75" to 0.875" square telescopic tubing lock plastic
Square Tubing Telescopic Snap Lock 3/4" OD to 7/8" OD
Square telescopic tubing lock 5/8" to 3/4" square 0.625" to 0.75" square telescopic tubing lock plastic Specification sheet for Square telescopic tubing lock 5/8" to 3/4" square 0.625" to 0.75" square telescopic tubing lock plastic
Square Tubing Telescopic Snap Lock 5/8" OD to 3/4" OD
Square telescopic tubing lock 1/2" to 5/8" square 0.5" to 0.625" square telescopic tubing lock plastic Specification sheet for Square telescopic tubing lock 1/2" to 5/8" square 0.5" to 0.625" square telescopic tubing lock plastic
Square Tubing Telescopic Snap Lock 1/2" OD to 5/8" OD
B Lock for 1/2" to 3/4" EMT Telescopic tubing lock adjustable clamp B Split Collar Lock for 1" to 1-1/4" EMT
B Split Collar Lock for 1" to 1-1/4" EMT
B Lock for 1/2" to 3/4" EMT Telescopic tubing lock adjustable clamp B Split Collar Lock for 3/4" to 1" EMT
B Split Collar Lock for 3/4" to 1" EMT
B Lock for 1/2" to 3/4" EMT Telescopic tubing lock adjustable clamp B Split Collar Lock for 1/2" to 3/4" EMT
B Split Collar Lock for 1/2" to 3/4" EMT
3/8" to 1/2" OD Mini Economy Tubing Lock Set of 10 3/8" to 1/2" OD Mini Economy Tubing Lock Set of 10
3/8" to 1/2" OD Mini Economy Tubing Lock Set of 10
3/16" to 5/16" OD Mini Economy Tubing Lock Set of 10
3/16" to 5/16" OD Mini Economy Tubing Lock Set of 10
T103 Steel Spring Button for 1/2" 5/8" 3/4" OD Tubing 0.5", 0.625", 0.75" OD Tubing with 3/16" diameter x 1/4" high head, zinc plated steel close up T103 Steel Spring Button for 1/2" 5/8" 3/4" OD Tubing 0.5", 0.625", 0.75" OD Tubing with 3/16" diameter x 1/4" high head, zinc plated steel zoom out
T-103 Steel Spring Button for 3/8" OD or 1/2" OD Tubing Zinc Plated Set of 5

Frequently Asked Questions

What is a telescopic tubing lock?
Telescope tubes slide a smaller tube inside a larger tube. A Telescopic Tubing Lock is an additional piece that allows you to lock the inner tube at a specific point. These parts can go by many names including telescoping tubing lock, telescopic tube clamp, and tube lever lock, and more.
How do you decide on a telescopic tubing lock?
First, you need to find a lock that fits with the tube sizes you plan to use. Make sure the tubes will telescope one inside the other, not all tubing will. Second, determine what style of tubing lock you want. A split collar lock with a knob may achieve the strongest hold but requires 2 hands to operate. A lever lock may not have as strong a hold, but can be opened and closed with one hand.
Where can I get tubing that is guaranteed to telescope?
Testrite Aluminum offers both aluminum tubing that’s guaranteed to telescope in round and square, and also offers telescopic tubing locks.
Are there adjustable telescopic tubing locks for non-nominal sizes, like Electrical Metallic Tubing (EMT Tubing)?
Yes, Testrite Aluminum offers Telescopic Tubing Locks for EMT Tubing sizes. Our sister entity, www.TestriteOEM.com fabricates tubing locks for custom tube sizes in volume.