In this part of the world adjustable swivel castors are difficult to locate. I have used these castors on other workshop equipment and I am very satisfied with the abilty to move cumbersome objects around without any difficulties and with very little effort. When the pads are lowered onto the shed floor there is no movement of the equipment at all which is crucial when operating saw centres and thicknesser planers. Delivery times were quite reasonable. Australia Post was the only holdup with the first set and the Xmas holiday period held up delivery for the second set. Finally the price. Exceptional value.