For repairing a broken tap handle of building one from scratch. The tap ferrule is the piece you'll see at the bottom of most tap handles and is where the handle is screwed onto the faucet lever. You will also need hanger bolts (D2532) to screw the ferrule into a wood tap handle.
5/16" top threads and 3/8" bottom threads.
Pack of 5. Comes in a convenient zip lock bag.