• CNC Machined, 6061 aluminum body • Features an adjustable collar for security and ease of use • Collar shelf is compatible with Shrewd Riot v-bar • Works with any other v-bar that is 0.75" thick • Can be reversed to accommodate any thickness v-bar • 0.25" Through hole on extender makes tightening easy • Laser indicator lines enhance repeatability when placing v-bar • Weight: 3" (2.38 oz.), 4" (2.88 oz.), 5" (3.38 oz.) • Includes: self retaining washer, 5/16"-24 threads on both ends and stainless steel hardware