Material: polyurethane or rubber With or without metal bonded Used for dampening vibration between the wheels and frame, cushioning the ride, reducing driving noise, and preventing metal-on-metal contact. 100% brand new and high quality. Provide reliable performance for years - OE number: 5450186J00, 5450086J00, 0000007601057, 16233374, 46407372, 0016233374, 46407373, 7601062, 51393SK3000�