The Hyper Tough 6-Piece Tap Wrench Set is used to create threaded holes or rethread existing holes. SAE sized taps are manufactured from tungsten steel for strength and durability. This Tap Wrench set also features a T-Handle with nonslip grip chuck. This set includes 1/4-inch NC20, 5/16-inch NC18, 3/8-inch NC16, 7/16-inch NC14, 1/2-inch NC13 6-Piece Adjustable Tap Wrench Set * Tungsten Steel for Strength and Durability * Sizes Included: 1/4-inch NC20, 5/16-inch NC18, 3/8-inch NC16, 7/16-inch NC14, 1/2-inch NC13 * T-Handle with Nonslip Grip Chuck