PERFECT CASTER ROLLER FOR ANY DIY PROJECT: Comes in a 4 pack. MANY USES: Perfect for dollies, warehouse carts, freight terminals, food service carts, industrial and commercial equipment. MEASUREMENTS: 3/4" Roller Bearing with 1/2" ID Bushing and Zerk 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: Metallic Style: Caster Condition: New Feature: 3/4" Roller Bearing with 1/2" ID Bushing and Zerk Axle Type: Swivel Casters w/ Top Lock Brake Bearing: Roller Bearing Top Plate: 4" by 4 1/2" Overall Height: 6-1/2" Material: Semi-Steel Capacity: 1000 lbs each Quantity: 1 - Set of 4 Part Number: 505SB Installation Hardware: Not included