Listing is for a set of four (4) Service Caster Series #100 swivel casters with 6" diameter by 2" wide dual pneumatic wheels and maintenance free precision ball wheel bearings capable of supporting a total weight of 2,000 lbs. (500 lbs. per caster). When searching for a reliable and durable solution to your caster needs, look no further than the Service Caster Series #100 casters. The universal design provides an excellent OEM and replacement part for luggage carts, food carts, or any application your business requires. With it's zinc plated finish and pneumatic rubber wheels all rolling on finely crafted ball bearings, the Service Caster Series #100 provides enhanced noise reduction and consistent roll on any surface, for an overall superior ride under any condition. Note: this caster is NOT intended for highway use! Manual speed only. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward.