Description: 1.Universal Design - 33mm x 33mm rubber diameter with 12mm x 6mm hole diameter , 34mm height ,set of 2 pieces.Large Tapered with Washers .2.Rubber has high elasticity, aging resistance, corrosion resistance, high temperature and oil resistance.3.Made of synthetic rubber material, non-toxic and tasteless, non-slip wear-resistant, pressure resistant.4.It is easy to use, put on the bottom of the device and screw it so that it does not fall off.5.Widely used in table and chair furniture, equipment, support chassis, electrical instrumentation, etc. .