Master Caster® Roll-Arounds Instant Swivel Wheels, Self-Adhesive, Black, 4/Set

360° swivel action allows smooth rolling in any direction. Unique patented mounting options, angled, flat or u-shaped. Each set of 4 wheels holds up to 250 lbs. Attaches securely to most smooth surfaces, vinyl, plastic, wood, corrugated board, and masonite. Specially formatted adhesive bonds tight and hold permanently. No tools needed, just peel, stick and roll.