3-1/2" x 1-1/4" Thermoplastic Rubber wheel Swivel Caster with Total Lock Brake - 300 Lbs Capacity

3-1/2" x 1-1/4" Thermoplastic Rubber Wheel Swivel Caster with Total Lock Brake - Part# Q523501MIRSWB 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 like metal shavings. 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.): 300 Link to Matching Rigid Caster: Q5235R01MIR Wheel Diameter: 3-1/2" Caster Rig Material Type: Cold Rolled Steel Tread Width: 1-1/4" Caster Rig Color/Finish: Bright Zinc Plated Wheel Type: Thermoplastic Rubber (TPR) Swivel or Rigid Caster: Swivel with Total Lock Brake Wheel Bearing Type: Ball Bearings Swivel Radius: 4-3/16" Overall Height: 4-11/16" Swivel Construction: Double Ball Raceway Temp Range: -45 to 180 F Mounting Plate:  2-1/2" X 3-5/8" Wheel Durometer: 65 Shore A (+/-5)  Bolt Hole Pattern: 1-3/4" x 2-7/8" to 3" Wheel Color: Grey Mounting Bolt Size: 5/16" or Smaller Link to Replacement Wheel: QMIR35G3 Weight: 1.88 Lbs