You will get 3 pack replacement mop heads for your spin mop, which will last for one year use. Follow the picture instruction to stall it on to your mop, very sturdy and easy to use. Perfect replacement mop head for 6’’ to 6 1/4’’ spin mop system (BE AWARE this mop head may not fit some versions of Mopnad and Mr clea mop, please make a measurement of your existing mop head before you place your order just in case it’s not a perfect fit). Made of 100% high-quality microfiber, durable and machine washable. This mop head refill won’t scratch the surfaces you’re cleaning. Also the microfiber mop head removes and absorbs tough dirt and grime effortlessly. Best for smooth surface floor, such as wooden floors, ceramic tile, laminate floors, marble floors and other sealed hard floors. Also it can be used to wash your car. Just toss in the washing machine to renew the fiber and re-use!