1911 Govt. Model: Cobblestone Rubber Panels with Palm Swells - Black Designed to work with or without an ambidextrous safety. SPECS: Color: Black Material: Rubber Texture: Cobblestone Includes Palm Swells HARDWARE: These grips are designed to work with factory hardware. 1911 Government grip screw hole spacing is 3 1/16" . Grip screws should be tightened to 12 in/lbs of torque with a correct fitting 3/32" hex driver.