Using this toilet paper dispenser is easy. First, open the dispenser by unlocking the self - locking mechanism. Then, place a standard - core toilet tissue roll with a diameter of up to 4 1/2' (115mm) inside. Close the dispenser, and it's ready to use. When the roll is empty, you can unlock it again to replace the roll. For maintenance, wipe the bright - polished chrome - plated steel surface regularly with a soft, dry cloth to keep it looking new. Avoid using abrasive cleaners as they may scratch the surface. Make sure to keep the dispenser away from excessive moisture to prevent rusting.