Swivel Wheels and Casters 5"x1-1/4" Plastic Wheel on Steel Caster Square Stem This versatile caster features a 5-inch plastic wheel that is mounted on a sturdy steel caster with a square stem and locking pin. The stem measures 2 inches in length and fits in most standard mounting holes. Stem width of 7/8 inch. The wheel has a width of 1 inch and provides smooth and easy movement for your equipment. This caster is suitable for use in material handling, business, and industrial applications. Thanks for stopping. Please visit my slow growing store, read about me, my policies and view other items that may interest you. Also, check out my other casters and wheels. **I always have money saving volume discounts on most items** David - thediscountretailer LLC