explanation wide application: rubber mat for all kinds of cylinders and bodywork product size and weight: diameter=48mm, height=38mm, size of the slot 10 mm ultra high quality: very robust natural rubber material, fast, simple, non-slip and practical! The indentation on the bottom surface of the rubber pad provides stable support for 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 the contact areas. Durable rubber construction provides more d? Damping 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: the 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 in 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 lift the vehicle using standard JACK points which may be located on welds or frame rails. In general, protect the frame rails and raise the vehicle with these jacks. Without proper support, thin guide rails are bent, resulting in future use. Even if the CRIC cannot be fixed at the CRIC point, there is a problem Package includes: 2 x Automotive Rubber Mat