Heavy duty rubber foot pad. Non-skid. 1.5" wide x 5/16" tall. Comes with screw. Works great on Mills/Jennings antique slot machines. Most old slot cabinets have a hardwood bottom or skids. Some have no skids yet have screws on the bottom. Put at least 4 of these on the skids/bottom for safety when using the game on a counter/bar type surface. Will not scratch the surface. Safer for the Grand Kids.