PERFECT CASTER ROLLER FOR ANY DIY PROJECT: Wheel tread is non-marking, and smooth rolling, while being highly resistant to oil, grease, and water. MANY USES: This set of 4 casters can be used for heavy-duty applications such as moving toolboxes, industrial carts, workbenches, storage units, and large machinery while ensuring smooth mobility and secure braking. MEASUREMENTS: 3/4" Roller Bearing with 1/2" ID Bushing (Manufacture will provide zerk fitting in the wheel or axle), Top Plate: 4" by 4-1/2", Bolt Pattern: 3" by 3", Overall Height: 7-1/2". CAPACITY: Supports 1,200 lbs each, 4,800 lbs total support. FAMILY OWNED BUSINESS: Creative Industrial Sales has been in business for over 30 years, we are a family owned business in America that supplies to all OEMs. Trust us to supply your projects with quality casters. Size: 6" x 2" Color: Red Style: Caster a Condition: New Feature: 3/4" Roller Bearing with 1/2" ID Bushing (Manufacture will provide zerk fitting in the wheel or axle) Type: Swivel Caster w/ Top Lock Brake Bearing: Roller Bearing Top Plate: 4" by 4-1/2" Bolt Pattern: 3" by 3" Overall Height: 7-1/2" Material: Heavy Duty Polyurethane on Steel Hub Capacity: 1200 lbs each Quantity: 1 - Set of 4 Part Number: 506PSBC Installation Hardware: Not included