TroySys CRCOBS2-11 Clear Rubber Desk Bumpers with Adhesive, Hemispherical, 11Ea./Bag This includes tables, pedestals, and other furniture tops These rubber desk bumpers control the movement of the glass, and absorb the shock, on many types of surfaces including wood, metal and plastic These polyurethane bumpers are the ideal cushions for leveling your glass table top, while also affixing it, so your table tops don't skid