Fangrui Product Details Rubber Vibration Isolator Is Mainly Used For Air Compressors, Diesel Engine Engineers, Gasoline Engines, Water Pumps. Welding Computers And Other Devices As Mating Elements, In Order For The Body Normal Work And Good Environment, Dampening Noise Reduction And The Effect Is Obvious. These Brackets Offer Excellent Reduction Of Noise And Vibration. Product Name: Rubber Vibration Isolator Buffer Material: Metal, Rubber External Thread Size (approx.): M4 X 10mm (diameter * L) Internal Thread Size (approx.): M4 X 6mm (diameter * L) Rubber Size (approx.): 15mm X 15mm Total Height (approx.): 25mm / 1 Inch Color: Black, Silver Tone Weight: 22g Package Content: 4 Pcs X Rubber Vibration Isolator Buffer Only The Above Package Content, Other Products Are Not Included. Note: Light Shooting 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.