Listing is for one (1) Service Caster Series #20 stainless steel swivel caster with a 4" diameter by 1-1/4" wide thermoplastic rubber wheel capable of supporting 250lbs./caster. Introducing Service Caster's replacement caster, a perfect alternative to the Uline caster H-7446S. When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series 20 stainless steel thermoplastic rubber casters. The Service Caster Series #20 is ideal for light and medium duty material handling, carts, equipment, and shop projects. The soft, quiet and non-marking thermoplastic rubber wheels perform especially well on hard surfaces such as concrete, tile, and wood. They are resistant to water, oil, and grease and will keep you safely moving forward. In contrast to the zinc plated caster, the luxuriously polished stainless steel finish resists rust and corrosion in indoor or outdoor applications where moisture is a factor. Mounting options include top plate, bolt hole and standard and metric threaded stem sizes. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward.