Superior Tool's Basin Buddy Faucet Nut Wrench is a universal basin tool used to remove a variety of coupling nuts and locknuts in hard-to-reach places like under your bathroom vanity or pedestal sink. Patented design in the US and Canada, this universal tool fits metal lock nuts, coupling nuts, PVC locknuts, most metal and plastic toilet fill valve ball-cock nuts. Use with 1/4" or 3/8" ratchet drive, adapter included. The cutaway design fits around existing supply lines to remove coupling nut. Once coupling nuts is remove, cutaway fits around the faucet shank (1/2") to remove metal and plastic nuts. Unique slots grab locknut wings without breaking them off. No more broken nuts that need to be cut off.