Listing is for a set of four (4) Service Caster Series #92 casters with 8" diameter, 3" wide black phenolic wheels. Set includes two (2) rigid casters and two (2) swivel casters fitted with side locking brakes. Supports 10000 total pounds (lbs) at 2500 pounds (lbs) per caster.When searching for a reliable and durable solution for extra heavy duty projects, consider Service Caster’s Series 92 top plate phenolic casters. The Service Caster Series #92 is ideal for material handling, carts, equipment, and shop projects. The phenolic wheels roll easier and quieter than comparable steel wheels, and are highly resistant to impact damage, providing protection for floors in commercial and industrial settings. Additionally, they are resistant to water, oil, grease, and are non-metallic, providing spark proof protection. Featuring a Kingpinless hot forged ASTM1045 steel design that increases caster durability and integrity, the series 92 eliminates problems associated with kingpin failure due to severe shock loading. In addition, the Kingpinless design features ½” diameter HRC45 steel ball bearings which absorb thrust and load in severe environments. Lastly, Service Caster’s Series #92 top plate casters are finely crafted with zinc plating, grease fittings, and 4 position notches to accept 4-position locks. These highly versatile casters are ideal for a wide range of applications, such as dollies, platform trucks, warehouse carts and freight terminals. Even drywall carts, welding carts, and wall panel carts will be ready to roll on the Series 92, keeping you moving forward. Service Caster is unsurpassed in quality, reliability, and excellent customer service. Count on us to move you forward.