4" x 1-1/4" Thermoplastic Rubber (TPR) Wheel Swivel Caster w/ 1/2" x 1-1/2" Long Threaded Stem - 320 lbs Capacity

4" x 1-1/4" Thermoplastic Rubber Swivel Caster w/ 1/2" x 1-1/2" Long Threaded Stem  - Part #: Q504022MIR Thermoplastic Rubber Wheels combine the advantages of both a hard & soft tread material in a single wheel, making it one of our favorite caster wheels. Like a hard tread wheel, thermoplastic rubber rolls easily and is very durable. Like a soft tread wheel, it is quiet, protects floors, and has a cushioned ride. These caster wheels also hold up well when exposed to weather, are resistant to chemicals, water, & steam, and reject floor debris. We highly recommend these caster for applications requiring non-marking, floor protective, quiet, and smooth rolling wheels. We would not recommend these wheels for applications that require sitting in one spot for long periods of time under heavy loads. Specifications:  Load Capacity (lbs.): 320 Link to Replacement Wheel: QMIR4G3 Wheel Diameter: 4" Caster Rig Color/Finish: Silver Zinc Plated Tread Width: 1-1/4" Swivel or Ri