PERFECT CASTER ROLLER FOR ANY DIY PROJECT: Wheel tread is non-marking, and smooth rolling. MANY USES: Can be placed on any project where you need move loads from one place to another. 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: 6-1/2". CAPACITY: Supports 1,000 lbs each, 4,000 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: 5" x 2" Color: Red Style: Caster 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 & Rigid Caster Bearing: Roller Bearing Top Plate: 4" by 4 1/2" Bolt Pattern: 3" by 3" Overall Height: 6-1/2" Material: Heavy Duty Polyurethane on Steel Hub Capacity: 1000 lbs Quantity: 1 - Set of 4 Part Number: 505PSTL and 515PS Installation Hardware: Not included