Tap Information: Drill America DWT Series hand threading tap is the most versatile taps for hand use, or for tapping under power. Hand threading tap is popular for use in general machine tapping or CNC tapping. This is also appropriate for tapping the vast majority of materials in through or blind holed conditions. Taper style: starts the thread square with the work piece. Plug style: generally used in thru holes. Bottom style: generate the thread to the bottom of the hole. Set: Contains taper, plug and bottom taps. . Drill bit information: Drill America dwdn Series high speed drill bit is a dependable, general purpose drill designed to perform in a broad range of materials in the iron and steel families. Ideal for production, maintenance or portable drilling jobs. Surface treated with abrasion-resistant black oxide. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that Act to hold coolant near the cutting edge. Round shanks allow use with a wide variety of tool holding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging.