4 Inch Rubber on Aluminum Swivel Caster Set with Roller Bearings and Brakes

These Service Caster Series #20 Rubber on Aluminum casters offer various wheel sizes and mounting heights: 4” Wheel: 5-1/8” mounting height; 5” wheel: 6-1/8” mounting height; 6” wheel: 7-1/2” mounting height. Weight Capacity: 4": 400 lbs Capacity Per Caster; 5": 450 lbs Capacity Per Caster; 6": 450 lbs Capacity Per Caster Top plate measures at 2-3/8" x 3-5/8" with a bolt hole pattern of 1-3/4" x 2-7/8" to 3" and can either be bolted or welded on. Brake options include a top lock brake (TLB). The top lock brake (TLB) places a positive locking force against the wheel tread locking the wheel only.