Mounting options include top plate, bolt hole and standard and metric threaded stem sizes.
4 Inch Solid Polyurethane Wheel Swivel 3/8 Inch Threaded Stem Caster Brake, 2PK Supports a total weight of 1,200lbs (300lbs/per caster). Listing is for a set of four (4) Service Caster Series #20 casters, two (2) swivel 3/8" threaded stem with brake casters and two (2) swivel casters, with 4â diameter by 1-1/4â wide solid polyurethane wheels. Service Caster is unsurpassed in quality, reliability, and excellent customer service. This ensures the wheel will not flat spot, as can occur with comparable polyurethane wheels, resulting in a smooth and solid roll over long periods of time.