100mm 316 grade stainless steel swivel castor complete with an M12 bolt hole fitting. These 316 stainless steel swivel casters are resistant to corrosion and can handle the harshest environments even when salts or aggressive chemicals are present. Due to the high salt spray content within the offshore and marine industry, we would recommend using these castors. As well as being marine casters other applications include the food, hospital and medical industry. 316 Stainless Steel Bolt Hole Castor with Nylon Wheel 100mm