4 Piece Poly on Iron Caster Set with Roller Bearings

Features

• 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 tlb places a positive locking force against the wheel tread, locking the wheel only. The slb places a positive locking force against the wheel hub, locking the wheel only. The ttl also places a positive locking force against the wheel tread, but the ttl simultaneously locks the wheel and the swivel for a complete stationary position.
• Bolt size: 3/8" (hardware not included)