3 in. 220 lbs. Capacity Polyurethane Double Ball-Bearing Swivel Plate Caster with Brake (4-Pack)Remember when you had the perfect wheels. Add some mobility into your DIY project with some WEN Swivel Casters. Made from durable non marring polyurethane, these reliable wheels measure in at 3 in. Dia with a 1. 2 in. tread width (75 mm x 31 mm). Double 6001 ball bearings reduce friction for smooth rolling. Plate measures in at 3. 75 in. x 2. 5 in. (93 mm x 64 mm) with four 12 mm x 8. 5 mm mounting holes. Mounting hardware not included. Includes 4