Invader Wet Mop Handle makes removing and replacing mopheads easy and efficient. Side gate allows mophead to easily slide on and off handle. Thumb wheel clamps the mop firmly in place. It should be used with 1" (2.5 cm) headband mopheads only (sold separately). Large head of the frame is made of sturdy plastic. Durable aluminum body with a vinyl covering delivers an improved grip.