Rubber buffer with bolt . Rubber dampers . Rubber Shock AbsorberBuffer bolts, cushioning screws, screws, rubber shock absorber and a rubber one thread, rubber bolt buffer Thread: m4 / m5 / m6 /m8 / m10 / m12 Screw length: your demand .Rubber diameter: your demandBolts total length: your demand The material of bolt : carbon steel The material of rubber is Silicone rubber .Hardness of Rubber is 70 Shore A We can accept customization of the material and specifications of bolt , and the material and hardness of plastic . While supporting gaskets and nut , all kinds. The product accounted for by the metal parts and rubber together a cylindrical shock absorber, the structure is simple, easy to use. , Protect the machine from external vibration disturbance in the radio equipment, instruments, meters, and has a good cushioning effect.