1.5 inch (38mm) Heavy Duty Casters Wheels with Side lock brake High-Quality: our caster support part is made of high-carbon steel, and the surface is chrome-plated to prevent rust and wear. Widely Used: Can be used in both industrial and residential applications, for coffee table, plant stands, bookshelves, shoe bins, toy bins, shopping carts, workbench, warehouse or supermarket shelves, they can be installed to most devices if you want. SPECIFICATION: Rotate 360 degrees Side Locking Brake Smooth and Silent and Sturdy Capacity: 32KG (70lbs) each caster wheel Plate Size: 1.5"" (38mm) x 1.8"" (45mm) Hole center to hole center: 1.1"" (28mm) x 1.5"" (38mm) Mounting hole dimensions: 0.2""(5mm) Overall Height: 2""(51mm) Caster Wheel Diameter: 1.5""(38mm) Caster Wheel Width: 0.7""(17mm) Caster Wheel Material: Polyvinyl Chloride (PVC) Caster Wheel Color: Red Ball bearings: Plate ball bearings Package Includes: 12 x Caster Wheels 50 x Iron screws (Warning: Do not use overload, it will cause damage or shorten the use time)