PERFECT CASTER ROLLER FOR ANY DIY PROJECT: Wheel tread is non-marking, and smooth rolling wh 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: 2 5/8" x 3 5/8" to 3" by 3", Overall Height: 5 5/8". CAPACITY: Supports 700 lbs each. 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. 4 X 2 Rigid Caster Heavy Duty Poly on Steel Hub, Supports 700 lbs Each, perfect for Chaird, musician instrument Cases, Trade Show Crates