UNIVERSAL DESIGN - Outer diameter 46mm, height 28mm rubber mount with M8 Studss , set of 4 pieces rubber Vibration Mounts EXCELLENT DESIGN - rubber mounts shock Simple geometrical design supports dynamic performance and stability under lateral (sideways) forces ADVANTAGE - rubber Vibration mounts's rubber has large elasticity and is light and high, which plays a good buffering role and can protect the machine well. MATERIAL - The rubber 's metal and rubber are bonded together using a special process APPLICATION - Rubber mounts mainly used for Fitness equipment, air conditioning, bicycle,air compressors, enginers, gasoline engines, water pumps ,Welding machine and other equipments as a damping element Colour:Black Material:Metal + Rubber Package Contents: 4 x Rubber Mounts Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.