Wolf Tooth Echo Lock-On Grips are made for mountain biking across disciplines. The rubber material is soft and tacky to the touch, while the alternating diagonal handle pattern keeps the rider's hand in place with or without gloves in all conditions. The grips are made of black molded rubber and come with anodized aluminum end caps that match the eight basic colors of other anodized Wolf Tooth components and accessories. Includes plastic Wolf Tooth end plugs.length 132 mm and outer diameter 32 mm The screw in the collar is tightened/loosened with a 3mm Allen screw. tech Specs: Weight: 106g Dimensions: 132mm long, 32mm diameter Material: 20A durometer rubber on a rigid plastic liner; 6061 aluminum clamp Tool Required: 3mm hex wrench Max Torque: 2.5 Nm