Using the Superior Tool's Tub Drain Extractor is easy. First, when you notice that the crosshairs on your 1 - 1/2' tub drain are corroded or missing and normal drain removal tools aren't working, take out this extractor. Place it on the stubborn drain. Then, use a light hammer tap to make the teeth of the extractor lock into the drain. You can use a 1/2' ratchet drive and extension or a 1 - 3/4' wrench or adjustable wrench to turn and remove the drain. As for maintenance, after each use, wipe it clean with a dry cloth. Keep it in a dry place to prevent rust. And since it's made of hardened steel with a zinc - plated finish, it should last a long time. Just be careful not to use excessive force while hammering to avoid damage to the extractor or the tub.