Invader® Wet Mop Handles make removing and replacing mop heads easy and efficient. Invader® Side Gate Handle’s thumb wheel clamps the mop firmly in place; should be used with 1" (2.5 cm) headband mops only. Easy-change, side-gate design allows you to quickly slide mop heads on or off. Adjustable thumb wheel enables stress-free, tight and secure clamp down. Solvent- and acid-resistant frame enables use with all commercial floor stripping agents. Includes one each.