Using these adjustable legs is easy. First, locate the spots on your appliance or furniture where you want to install the legs. Remove any existing legs if necessary. Then, screw the 1/2' Whitworth thread bolts of the adjustable legs into the pre - drilled holes. Make sure they are tightened properly so the appliance or furniture stands stably. Note that these legs are much larger than usual ones, so they might not fit in all places. Double - check the size requirements before installation. For maintenance, simply wipe the rubber foot pads and legs with a clean, damp cloth regularly to keep them clean. If you notice any signs of wear or damage, contact us, as these legs come with a full guarantee.