Luckyway 1-Piece 10 Sizes Titanium Step Drill Bit, 1/4" to 1-3/8" Size HSS Unibit for Metal, Wood, Plastic, Multiple Hole Drilling

Key features

• A MULTI-PURPOSE - Stepped structure, One step drill bit is equivalent to ten twist drill bits of different specifications. Size Includes 10 steps: 1/4", 3/8", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8".
• APPLICATION - Ideal for steel sheets/ aluminum sheets/ copper/ plastic/ wood board and many other types of sheet metal with ease countersink.
• HIGH SPEED STEEL TITANIUM COATING - Industry grade fully ground high speed steel with titanium coating reduces friction and drills with less heat,which ensures strong wear-resistance and durability.
• WE ARE DIFFERENT - The spiral groove is sharper than the straight groove, which can reduce the cutting resistance, strengthen the cutting groove, and effectively block the metal splash caused by damage.135° split point not only promises cutting speed,but also prevents slipping when start drilling.
• EFFICIENT DESIGN - Laser marking scale is clear.3/8" Tri-flatted shank fits into majority pistol drill and drill press securely without slip and shedding.Open hole, reaming hole, sink hole at one go.What are you waiting for?