KLETON Flat-Free Casters, 8"" (203.2 mm), 275 lbs. (125 kg.), Flat-Free, Rigid, Steel

Flat-Free CastersSolid polyurethane wheel never runs flatSame bounce feel and weight of a pneumatic casterSmooth and quiet rolling over rough terrain and surfacesLess costly than traditional foam-filled tiresBall bearing; ; Surface Applications: Concrete, brick, carpet, steel, tile,asphalt, wood and linoleum; ; Plate Size: 4"" x 4 1/2"" Bolt hole centers: 2 3/4"" x 3 3/8"" Bolt hole size: 13/32""