B Split Collar Lock 1" OD to 1-1/8" OD

2024 UPDATE - For 2024 our B Locks from 5/8" to 1-1/2" are updated with even stronger plastic, stainless steel hardware, and an even stronger hold! The B Lock is Testrite's strongest telescopic tubing lock. These telescopic locks are designed to pair beautifully with our telescopic aluminum tubing. The B Lock is a Split Collar Lock. This Black plastic lock includes plated steel hardware and phenolic S knob These adjustable tubing clamps are used for telescoping a 1" Diameter tube inside of a 1-1/8" OD tube. This adjustable tubing lock is perfect engaging a 1" tube inside of a 1.125" tube. The lock serves two functions, both to reduce the play between the inner and outer tube, as well as to lock or clamp the inner tube into a fixed position in relation to the outer tube. Size refers to the Outside Diameter (OD) of the tubing - larger diameter is fixed, smaller diameter slides through. Bulk packed - Ships FAST. Making your own telescoping tubing assembly and just want to buy our stronges