Designed to improve the performance of Vileda SuperMocio mops - you need 40% less effort when wringing the mop and you get the floors dry 25% quicker than when using an ordinary wringer. This is because the wringer has been designed on bionic technology principles. The wringer virtually grabs the mop like a hand, closing all around it and squeezing it like a lemon from all sides. Made of highly durable plastic for long life and stability.