Easy top-to-bottom squeezing action forces water from the mop down into the bucket, minimizing overflow. Removes more water with less effort and removes water uniformly from the mop. For extra durability, a hardened steel bushing supports the solid steel drive shaft where it enters the side plate. Accommodates virtually all popular string mop sizes (12-32 oz.) and can be used on a wide variety of buckets, including plastic models. Reinforced steel bottom band for stable operation and reduced bucket wear.