The Knuckleduster features a tapered internal sleeve that you have to tap onto your handlebar for full engagement. This tapered sleeve feels like it is already locked into place once fully tapped onto the bar and coupled with a single bolt lock-on clamp, you will not develop any play. The body of the grip combines the best elements of a half-waffle, mushroom ribbing, and an ergo feel. Featuring a mushroom pattern to minimize vibration. The KNnuckleduster grips are an "all day grip" that allow you to keep it Pinned Wide Open at all times.Featuring Deity TRC rubber compound for exceptional durabilityTapered inner sleeve to insure perfect contact with the handlebarSingle clamp design with forward facing bolts that feature loc-titeLasered black ano 6061 T6 aluminum clampsShort and wide rib design for added comfort with no side to side playHalf waffle recessed design for added control without hot spotsChevron v-channel design for your palm swell to give an ergonomic feelSeamless transition through the end of grip for comfort132mm length with 32mm outer diameter Item Specifications Color Black Flange No Lock On Yes Length 132mm Shape Round Weight 101g Deity Components Knuckleduster Grips Grip UPC: 817180021714