This 160mm fixed castor is made of a zinc plated housing which ensures the castor is robust enough and suitable for a variety of environments. The fixed castor, with the polyurethane wheel is strong and durable and suitable for moving machinery and equipment. The polyurethane tire is bonded onto the polyamide nylon center making the castor strong and durable. Fixed castors can be teamed up with swiveling and braked castors for maximum control when moving. 160mm Fixed Castors Polyurethane Wheel