7PCS 4-12 4-20 Titanium Coated Step Drill Bit Wood Hole Cutter Straight Groove

Features: - HSS drills bit set high quality tools for jobs. - Made from high-quality HSS steel. - Titanium coated to reduce friction and heat. - 3 sided shanks design in order to prevent slippage when in chuck. - Two flute design provides faster smoother and cleaner cuts and each step is clearly labelled with the depth diameters. Specifications: Size: 7 Types(as picture show) Finish: Titanium coated Type: Step Drill Head Type:Triangle Shank Material:High-speed steel 4241 Ideal for cutting holes in a variety of materials including steel brass wood and plastic etc. Package includes: 1*HSS Steel Drill Bit 4-12mm 1* HSS Steel Drill Bit 4-20mm 1*Umbrella drill 1*chamfer bit 3*saw drill Note: 1.Transition: 1cm=10mm=0.39inch. 2. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 3. Please allow slight manual measurement deviation for the data.