Large contoured bottomswell heelrest and wide upswept thumbrest straighten and extend the wrist for a relaxed steadier hold and more reliable accuracy. Wedgeshaped grip area wide in the rear narrow in front and evenly spaced finger grooves match the natural shape of the hand. Flexible synthetic rubber construction with impressed checking ensures secure noslip one or twohand hold. Available for Ruger Mark II also fits Mark I with andquot;A100andquot; frame and Mark III pistols. Mfg: Volquartsen SPECS: Thermomolded Volthane rubber black. Approx. 3andquot; 8.2cm wide at base 4andquot; 10.7cm high 5.2 oz. 147 g. Righthand RH and lefthand LH. Includes Allen head screws and wrench. Mark II Onepiece design fits Ruger Mark II and Mark I with andquot;A100andquot; mark