Handle has square hole to accept standard ratchet helps you to reach hard-to-reach valves and eases actuation of hard to operate valves. Handle has thumb-release locking mechanism to ensure that the valve remains in the open or closed position you have selected until you wish to change it. 1000 WOG rated. 304 stainless steel handle and trim. 316 stainless steel body. PTFE seats and seals. UL Listed for fuel or water.