The PRO45B has a heavy duty brass shank that won’t crack, corrode or strip. While it’s tough on the outside, it’s quiet on the inside. The special shank cuts down on noise and makes water hammer go away.
Preferred by professional plumbers
Heavy Duty 1/2 brass shank eliminates cross threading
Brass shank for added durability
Minimal water hammer
Easy to Install
Fits All Brands
Fast, quiet refill with absolute shut off after every flush