- Keeps Bed caster wheels from damaging carpet and underlay
- Works with wheels 50mm (2″) x 56mm (2-1/4″)or smaller
- Unique spike design minimizes carpet indentation and keeps legs and wheels from moving.
- Clear Polycarbonate plastic makes them invisible under furniture and are indestructible.
- Package contains 4 cups and supports 550 lbs (250kg) per cup
