Including 8,9,10,11,12mm nut head and 13mm hexagonal at the ends of rod. Tiltings handle for use on basin tap-back nut in confined space. Interchangeable heads suitable for most single-levers Tap. Wrench Socket Plumbers Back Nut Tool are specifically for faucet removal and installation. Wrench plumbing tool for common faucet installations,easily to rotates at awkwards angles,essential gadgets for your family.