5" Swivel Casters and Wheels 2 with Brake 1.5" Grip Ring Stem Caster Wheels 4Pcs This set of 4, 5" swivel caster wheels comes with 2 brakes and 1.5" grip ring stems. The wheels have a sturdy construction and are suitable for use in material handling and industrial settings. The stem type is grip ring and the unit type is a single unit. The stem dimension is 1-1/2" x 3/8" and the wheel dimension is 5" x 1-3/8". This set includes 4 caster wheels and is ideal for businesses in need of durable and reliable material handling equipment. The country/region of manufacture is unknown. Thanks for stopping. Please visit my slow growing store, read about me, my policies and view other items that may interest you. Also, Please check out my other casters wheels. **I always have money saving volume discounts on most items** David - thediscountretailer LLC