Wheel Width 2" Wheel Diameter 6" / Plate size: Top plate 4"x4-1/2", mounting over heights 7-1/2" 4800 lbs total capacity(4 x weight capacity than others on the market) / pack of 4 / Material: Polyurethane Mold on Steel Includes: 4 Swivel 2 w/ Brake(Swivel can be rotated 360 degree) Roller bearing with hardened raceway for extra strength / Quieter operation / Superior floor protection / Easy to clean Warranty: 90-Days hassle free return policy for all products purchased 100% satisfied guarante

SY America Caster Wheel Model Made from high quality material: Bright Zinc Plated Steel York and Polyurethane Wheel Wheel Diameter 6" with 2" thickness. Roller bearing with hardened raceway for extra strength Tread Width 2 Inch Bearing Type : Roller Bearing Plate size: Top plate 4"x4-1/2”, mounting over heights 7-1/2" Loading Capacity : Up to 1200LBS SY America Warranty 90-Days hassle free return policy for all products purchased from amazon store