DEWALT DWADTQTR5SET Impact Ready® 5pc Drill Tap Set 1/4" Capacity features a 1/4" hex shank for use in impact drivers. This item allows you to drill, tap, and countersink all in one step; capable of working with up to 1/4" thick material capacity. Commonly used by Elevator Installers, Mechanicals, Electricians, Glaziers. Includes: (1) 8-32 UNC, (1) 10-24 UNC, (1) 10-32 UNF, (1) 12-24 UNC, (1) 1/4"-20 UNC.