2" Inch length snaps around sled base legs. Durable molded plastic with felt base. Felt base sled base glides protect your floor from marks or scratches. Felt is for use on smooth hard floors. Not recommended for use on tile floors or rough floors or in kitchens or cafeterias. For these floors use plastic base sled base glides. Manufactured with peel and stick felt pads. Replacement pads are also available for purchase.