6" x 2" Swivel Casters Semi-Steel Wheel Brake (2) Rigid (2) 1200lb each Tool Box. Below is more information and specs on this product. Feature: 3/4" Roller Bearing with 1/2" ID Bushing and Zerk Axle. (Manufacture will provide zerk fitting in the wheel or axle).
Type: Swivel Casters w/ Top Lock Brake & Matching Rigid Casters. Top Plate: 4" by 4-1/2". Bolt Pattern: 3" by 3". 1 - Set of 4.