Very Small Hard Rubber Push-In Bumper – Hole diameter MUST be 3/16" or slightly smaller for this bumper to fit. If you are not sure of the hole size this bumper will probably not fit. "Rubber Feet" ---- "Mushroom Bumper" ------ Good for adding a foot or bumper to a confined space. ---- Pad surface is convex or rounded ----- Bumper Diameter 11/32" ----- Height of Bumper 5/32" ----- Stem Fits Hole Diameter 3/16" ( Can drill slightly smaller hole for tight grip ) ----- Stem Length 3/16" ---- Hard SBR Rubber Push-in Bumper ----- Durometer Hardness is 70A ---- Temperature range of –30° to +180° F. ---- Material is nonmarking. ---- Screws not used for installation of this product ---- Black Rubber