UNI step wrench with ratchet 73297

It is used for the assembly and disassembly of male threaded couplings (nipples) for heating valves and short valve extensions. Made of chrome-vanadium steel, hardened and nickel-plated. Drive shaft square 1/2"
Advantages
Universal use: external and internal Christmas trees and 12-sided pins size 3/8", 1/2", 3/4",1"

Mounting and dismounting of heating valve nipples, lower shut-offs on the radiator returns and short valve extensions
1/2"z ratchet makes installations quick and easy