IRWIN Step Drill Bit Set, 3-Piece (10502ZR)

Product Description IRWIN Tools 10502ZR Unibit Sheet Metal Step Drill Bit Set is a selection of the most popular Unibit step drill bits in the low diameter range (below 7/8"). Ideal for drilling true round holes with precise control in a variety of materials like sheet metal, metal plates, aluminum, fiberglass, plastics, plexiglass, and wood. The specially designed cutting edge drills true, round holes for a smooth, clean finish, and the SpeedPoint tip penetrates fast, prevents "walking," and eliminates the need for a pilot/starting hole. The hex shank provdes a secure grip in the drill chuck. Plus, the permanent laser-etched sizes inside the flute are easy to read for precise control during the hole enlarging process. Contains: Unibit #1 with 13 hole sizes (1/8" to 1/2" by 32nds), Unibit #2 with 6 hole sizes (3/16" to 1/2" by 16ths for deeper steps), and Unibit #3 with 9 hole sizes (1/4" to 3/4" by 16ths). Product made in USA. Amazon.com The Irwin 3-Piece General Purpose Unibit Set creates perfectly round holes in metal, plastic, wood and other thin materials without center punching. Ideal for steel, copper, brass aluminum and other thin materials, it automatically deburrs the top side of the hole. A single-flute cutting edge provides greater control through steps. The three-sided shank is designed so it won't slip in drill chuck. This set features an easy-to-sharpen, self-starting tip that eliminates skidding and the need for center punching. This set comes with a full lifetime warranty. From the Manufacturer Irwin's Unibit SpeedPoint combines the most desired features of a Step Drill, speed and control and as many as 13 different sizes onto one single-fluted step drill bit. Irwin Industrial Tools 10502 5023-Piece Set (10231, 10232, 10233)