6 Inch Glass Filled Nylon Caster Set with Roller Bearings and Brake/Swivel Lock

These Service Caster Series #30 Glass Filled Nylon casters offer various wheel sizes and mounting heights: 3-1/4” Wheel: 4-1/4” mounting height; 4” wheel: 5-5/8” mounting height; 5” wheel: 6-1/2” mounting height; 6” wheel: 7-1/2” mounting height; 8” wheel: 9-1/2” mounting height. Weight Capacity: 3.25": 900 lbs Capacity/Caster, 4": 1,200 lbs Capacity/Caster, 5",6" and 8": 1,250 lbs Capacity/Caster Top plate measures at 4" x 4-1/2" with a bolt hole pattern of 2-5/8" x 3-5/8" to 3" x 3" and can either be bolted or welded on. Brake options include a top lock brake (TLB), a total lock brake (TTL), or a side lock brake (SLB). The top lock brake (TLB) places a positive locking force against the wheel tread locking the wheel only. The side lock brake (SLB) places a positive locking force against the wheel hub locking the wheel only. The total lock brake (TTL) places a positive locking force against the wheel tread and the swivel simultaneously locking the wheel and the swivel for a complete stationary position.