Hand Tap and Drill Set comes in an easy to maintain plastic pouch. Set contains one High Speed Steel Hand Plug Tap and the matching size Black Oxide High Speed Steel Drill Bit. Hand taps are the most versatile taps for hand use, or for tapping under power. They are for use in general machine tapping or CNC tapping. Hand taps are also appropriate for tapping the vast majority of materials in through or blind holed conditions. High speed steel hand taps can be used for making new threads or re-threading damaged threads. Black oxide high-speed steel drill bits are a dependable, general purpose drill designed to perform in a broad range of materials in the iron and steel families. Black oxide high-speed steel dill bits are ideal for production, maintenance or portable drilling jobs and are surface treated with abrasion-resistant black oxide.