?Size?Rubber Size- 4.3"x2"; height: 2.4",Four pieces / set of shockproof rubber bearings & galvanized stud & metal gasket and nut set of 8. ?Anti Vibration?The Vibration isolator pads, which used to reduce noise and shock absorption - Supports up to 1000lbs for all 4 pcs. ?Strong Quality & Reduce Noise?Made of Durable Rubber (high durometer) and steel zinc coating, protect machine vibration interference, Resilient.Give family a comfortable sleep,Reduce NoiseI solates vibration transmission. ?Applicable Horsepower? 1P / 1.5P / 2P / 3P / 5P, Designed for heavy duty indoor or outdoor air conditioning use. ?Easy Installation?All you have to do is to place the devices holes in the screws and fasten the nuts of the ANTI VIBRATION Mounts, Set includes all anchoring accessories.