Pin-Butts....What are your pins sitting on?
Polyurethane Pin-Butts protect your hard flooring (wood, ceramic, vinyl, marble, etc) from scratches and prevent your machines from sliding during spirited play. Pin-Butts will not mark flooring (black rubber casters WILL leave skid marks) and are available in 7 colors. Made in U.S.A.
http://www.pinballlife.com/index.php?p=product&id=2962