Specifications Product Name : Rubber FootNet Weight : 22gColor : BlackMaterial : RubberRubber Diameter (Little End) : 11mm / 0.43"Rubber Diameter (Big End) : 14mm / 0.55"Fit Screw Diameter : M4Counter Bore Diameter : 6mm /0.24"Total Size : 14 x 9mm /0.55" x 0.35" (D x H) Package Content :20pcs x Rubber Foot Description:1.Universal Design - 14mm x 11mm rubber diameter with 6mm x 4mm hole diameter , 9mm height ,set of 20 pieces.2.Rubber has high elasticity, aging resistance, corrosion resistance, high temperature and oil resistance.3.Made of synthetic rubber material, 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.