wide application: rubber mat for all kinds of cylinders and bodies product size and weight: diameter = 48 mm, height = 38 mm, size of the 10 mm slot ultra high quality: very robust natural rubber material, fast, simple, non-slip and practical! The indentation on the bottom surface of the rubber cushion ensures stable support of the wagon lifting plate update: 2 rubber jack protectors, new polyurethane construction, make this rubber pad strong enough to support your lifting points and soft enough to avoid crushing contact areas. Durable rubber construction provides added durability. Cushioning and Compression Intensity Product description color: black 2 - piece Tanker Rubber pad Universal Frame Guard Clamp Protective Weld Diameter 48mm < p> specification: diameter: 48 mm height: 38 mm material: rubber color: black suggestion: Product slot size is suitable for most models. If there are special requirements for the groove size, use a sharp knife to cut the rubber pad into the D groove. Extension suitable for the car. It's a must-have for any professional or home mechanic. Many vehicle and truck service manuals will tell you to jack up the vehicle using standard JACK points which may be located on welds or frame rails. In general, protect the frame rails and lift the vehicle with these jacks. Without proper support, thin guide rails become bent, resulting in future use. Even if the CRIC cannot be fixed at the CRIC point, there is a problem The package includes: 2 x automotive rubber mats