Specification Material: Rubber Color: Black Shape: Round Type: Car Lift Accessories Assembly Required: No Number of Pieces: 4 Inside Diameter: 10.8cm/ 4.25in Outside Diameter: 12cm/ 4.72 in Height: 3 cm/ 1.18in Mounting Hole Pitch: 5cm/ 1.97in Gross Weight: 0.9 kg/ 1.98 lbs Package Size: 13*13*13 cm/ 5.12*5.12*5.12in Package Included 4* Lifter Rubber Pads.