Mop Bucket Casters Set of 4

RUBBERMAID Mop Bucket Casters Set of 4 Double Row Ball Bearing Swivel Raceway Durable Zinc Plating Non-Marking Quiet Thermoplastic Rubber Wheels Comes with 5/8″ OD Plastic Sockets Will Fit Most Rubbermaid Mop Buckets 4-Mop Bucket Casters and Sockets  3″ Swivel Casters with a 7/16 x 1-3/8″ Grip Ring Stem and Will Replace Rubbermaid Part 7380-L1