Product Name: HSS Step Drill Straight Flute Imperial Model NO.: 11AGT Usage: metal Drilling Material: High Speed Steel Type: Twist Drill Bit Standard: AISI, DIN Customized: Customized Tip: Split Point Flute: 2-Flute Design, Straight Flute Shank: Round / 3-Flat / Hex Finish: Bright / Titanium Coating / Tialn Coating Trademark: OEM available Transport Package: Double Blister Specification: See the table below Origin: China HS Code: 8205100000 Product Description Step drills are used for:1. Sheet metal working in electrical, sanitary engineering, heating technologies, automotive, mechanical engineering, switching systems and aviation2. Non-ferrous metal, steel, stainless steel, themoplastics, duroplastics, sheet metals up to 0.16" (8 gauge) thick3. Center, spot-drill, bore and debur, all in one operationFeature:1. CBN ground flutes without burrs mean a superior cutting edge an longer tool life2. Each step has a radially adjusted relief produced by CBN grinding, relating directly to the diameter of the step, so the cutting edge is always the highest point of the diameter3. Each step is axially CBN relief-ground, meaning the cutting edge is also the highest point of the axial cutting axis4. The cutting edge of each step has relief angle, meaning the cutting edge is alos the highest point in advance directionSizes available:SizeOveral lengthStepsShank3/16"3-1/8"61/4"1/8"-1/2"3-1/8"131/4"1/4"-3/4"2-3/4"93/8"3/16"-7/8"3"123/8"1/4"-1"2-7/8"83/8"1/4" - 1-3/8"2-7/8"33/8"1/4" - 1-3/8"2-3/4"103/8"1/2"2-1/2"13/8"7/8"2-1/2"13/8"