This 75mm light duty pressed steel swivel castor with 10mm bolt hole fitting and a grey rubber wheel is suitable for a wide variety of light duty applications. These bolt hole castors can be teamed up with tubular expanders for easy attachment into hollow tubular legs, and also with a Spring Fitting adaptor, enabling the castors to become a Spring Loaded castor, ideal for mobile step ladders and spring loaded stools. 75mm Bolt Hole Castors Grey Rubber Wheel