BF Systems Diamond Plate Chrome Motorcycle Cup Holder [Kitchen] The Diamond Plate Chrome Motorcycle Cup Holder attaches easily to your motorcycle or bike Securely holds a drink to keep you hydrated on the open road Features adjustable clamp, foam cup insert, and hex key wrench plus an extra screw Fits both 1" and 1-1/4" handlebars Holder measures 2-3/4" x 4-1/4"