This convenient kit comes with 8 commonly used tap tools. For aluminum, brass, copper, plastic and mild steel. Klein provides two each of the smallest sizes for a total of 8 taps. Each works easily with the quick connect in power tools. Includes a carrying case to keep your taps in one place for immediate access.PRODUCT FEATURES:- Drill, tap and deburr in one easy step- For aluminum, brass, copper, plastic and mild steel- Designed for use on up to 10 gauge metal- 1/4-Inch hex for easier application with quick connect- High speed steel for added durability- 6-32, 8-32, 10-32, 10-24, 12-24 and 1/4-20 tap sizes- Includes a carrying case