Online Best Service 12 PK 2" Swivel Caster Wheels Hard Rubber Base with Top Plate & Bearing Rotate 360 degrees. Smooth & Silent & Sturdy. Capacity: 100lbs each. Plate Size: , 1.9" (49mm) x 2.2" (58mm). Hole center to hole center: 1.3" (35mm) x 1.7" (45mm). Mounting hole dimensions: 0.23" (6mm) round. Wheel Dia.: 2" (50mm). Wheel Width: 0.8" (21mm). Wheel Material: Rubber. Overall Height: 2.5" (65mm). Color: Black Ball bearings: plate ball bearings. Includes: 12 pack 2" no brake caster