Swivel Wheel Casters 2" Steel Plate Wheels Caster Polyurethane Toolbox Creeper Sold as a single unit, these quality casters are perfect for a variety of uses, from toolboxes to creepers. The 2-inch swivel wheel is made of durable polyurethane and sits atop a sturdy steel mounting plate that measures 1-7/8 by 2-1/4 inches. The caster has a caster height of 2-3/4 inches and utilizes ball bearings for smooth swiveling action. Whether you're looking to improve the mobility of your toolbox or need to replace the wheels on your creeper, this caster is the perfect solution. These wheel casters are sure to provide reliable and long-lasting performance. Thanks for stopping. Please visit my slow growing store, read about me, my policies and view other items that may interest you. Also, I would be honored to be added to your saved seller list. **I always have money saving volume discounts on most items** David - thediscountretailer