ODI X-Treme Lock-On Grip - Bonus Pack Black, 130mm Thick chunky knurl pattern offers exceptional traction Large raised diamond plate pattern pads hands and provides additional traction Grip profile tapered to provide more material where your hands contact the bar most Lock-On Grip System = 100% Slip Free performance, Includes new Snap Cap End Plugs 113g/pair (includes clamps), 130mm Length