XIANQI Product Name: Windshield Screw Nut; Material: Metal, Rubber Fitment: To fit any motorcycle with M4 4mm windscreen bolt pattern, for many Motorcycle and ATV models, which are commonly used to secure motorcycle fairings, parts, body parts, fenders, bumpers and some windscreens. Function: firmly fix the windshield on the motorcycle. Suitable for replacing your missing and damaged screw nuts. Thread Diameter: 4mm / 0.16", Dimension: 11 x 12.4 / 0.43" x 0.49"(Max.D*L) Package Includes: 30 x M4 Straight Windshield Screw Nut Description: The 4mm (M4) straight universal rubber well nut. To fit any motorcycle with M4 4mm windscreen bolt pattern. Function: firmly fix the windshield on the motorcycle. Corrosion resistance against saltwater, road film. Replace and freshen up those old Windshield Screw Nut. Easy installation, No install instructions. For many Motorcycle and ATV models, which are commonly used to secure motorcycle fairings, parts, body parts, fenders, bumpers and some windscreens. Specification: Color: Black Material: Rubber, Metal Thread Diameter: 4mm / 0.16" Shank Diameter: 7.8mm / 0.31" Shank Length: 10.8mm / 0.43" Head Diameter: 11mm / 0.43" Head Length: 1.6mm / 0.06" Dimension: 11 x 12.4 / 0.43" x 0.49"(Max.D*L) Note: As your old well nuts may be distorted and torn, measuring the screw diameter to determine the correct wellnut size will be recommended. Well nuts typically do not last for the life of your machine and should be replaced periodically if dried out and cracked. Package Includes: 30 x M4 Straight Windshield Screw Nut