This pipe nipple extractor set is designed to free pipe nipples from fittings without cracking, marring or scratching. The extractors are made of durable heat-treated steel and feature zinc plating for resistance to rust and corrosion. Sizes are etched on for easy identification and selection. Pipe sizes: 1/8”, ¼”, 3/8”, ½” & ¾” NPT. Extractors have a left handed tapered spiral to grip the inside of the nipple. Instructions for use on package back. 1. Tap Extractor snugly into broken piece of pipe nipple with hammer. 2. Using hand wrench or socket, turn Extractor counterclockwise to loosen broken piece. See Warning on package back.