The square ave grips offer a specially contoured design to give great control to the ride. The soft eraser (25A) is designed to maximize the grip, with a domed line in the palm of your hand, and different sizes of ridges. It also has a special Chromag treatment to increase its durability. The unique lock-on chromga clamping system, with a tip that perfectly tightens the hanger at its end while protecting it. - special 25A durometer gum with a double density for excellent hook/durability ratio - length 142 mm - Diameter 32 mm - Manufacturer weight 105 g