4" x 2" Polyurethane on Aluminum Wheel Swivel Caster with Total Locking Brake - 750 Lbs Capacity

4" x 2" Polyurethane on Aluminum Wheel Swivel Caster with Total Locking Brake - Part # 1463P7B420SBTL Polyurethane on Aluminum wheels offer more floor protection, non-marking treads, quieter rolling, & smoother rides compared to steel or phenolic wheels while still providing comparable load capacities. Polyurethane on aluminum caster wheels are considered the premium polyurethane wheel. These caster wheels offer all the benefits of polyurethane on iron wheels, and also has the added benefit of being lighter, easier to roll, resistant to rust/corrosion, and have a mechanically bonded tread helping to prevent the tread from de-bonding from the core. These wheels can be used in most applications, but are not recommended for hot or cold applications.  * Total locking brake casters work best with softer wheels like neoprene, soft rubber, thermoplastic rubber & polyurethane. The softer wheel allows the brake pad to grip the tread effectively. While total locking brakes also work with