____Description: Tension locks are triglides frequently seen as adjusters on back pack straps. They are used to lengthen or shorten the strap to which it is attached. This tension lock is a 1-1/2 inch tension lock and would work best with 1-1/2 inch webbing or strapping. It is made of heavy duty plastic for strength and durability. ____Notes on Use: D-rings, buckle, triglides etc. are sized by the webbing or straps they are meant to be used with. These work with 1-1/2" webbing or straps. Country Brook Design cannot be held responsible for misuse of our product. It is the responsibility of the purchaser to determine the suitability of the product for their use. These high quality 1-1/2" Tension Lock Triglides are used for numerous applications such as: (Harnesses) (Leashes) (CollarsBackpacks) (Purse Straps)...and numerous other applications or uses.