Premium Material - Made of quality rubber material; and Practical; Slotted top and bottom of this jack pad, which could provide more cushion and support jack Provide Support - Square Jack support cushioning pressure pad, could effectively resist pressure, can cope with extreme environments, give travel and repair more protection. Also it is sturdy enough to support your lift point while soft enough to preventing crushing the contact area; Protect the car body and frame rail when jacking up the vehicle. Small tips: because it is newly factory production and heavy duty rubber material, so it will have a little bit rubber smell, please put it in the ventilation room for some while ! type:Car Body Support Lifting Fitment:for W639 W477 Colour:black Material:plastic Package Contents: 4 x jack stand Only the above package content, other products are not included. Note: Light reflection 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.