Arkdeffon Step Drill Bit Set & Automatic Center Punch,Titanium Coated, Double Cutting Blades, 5pcs Hss Multiple Hole 50 Sizes (1/8In-1 3/8In) High-Speed Metal Steel with Aluminum Case - Product Features
- High-Speed Steel - The drill bit is made of high-speed steel with high hardness, high wear resistance and heat resistance, which can easily cut sheet metal, aluminum plate, copper, plastic and wood board, etc.
- 50 in 5 Drill Bit - The drill bit group includes five standard stepped drill bits, which can replace 50 single drill bits and process 23 holes with diameters ranging from 1/8\" to 1-3/8\". The package includes 5 step drills, 1 automatic center punch, and 1 aluminum storage box
- Reasonable design - Double-edged and X-shaped opening design to ensure faster and smoother cutting; double spiral grooves reduce cutting resistance and chip removal more smoothly; triangular shank design can prevent the drill from slipping
- Titanium Coating - Coated by titanium performs well in heat, corrosion and rust resistance,maintain good gloss even after long-term use,Effectively extend service life
- AFTER-SALES SERVICE - If you have any questions ,please contact us through Amazon for any questions,we will help you solve your issues