Step Drill Bit BE-TOOL 4-32mm Spiral Grooved Drill Nitrogen Treatment HSS Spiral Grooved Step Drill Bits Hex Shank Metric for DIY Plastic Wood Metal Aluminum Copper

• Professional HSS Step Drill:design for precision drilling different size holes from 5mm up to 32mm in diameter,optimum speed and accuracy.you can achieve one-time processing of large holes, no need to replace the drill bit and positioning hole.
• High Quality Material: Made of high quality HSS, the titanium coating ensures extreme durability, reduces friction and heat.Titanium drill bit is particularly suitable for processing copper and aluminum pieces / mold steel / spring steel / cast iron pieces / iron and other metal materials.
• Easy To Drilling: Mark hole locations and Two-fluted design makes drilling faster and smoother. Surface depth gauges make drilling precise.
• Lasered Sizes: Sizes are laser etched into the metal so they will not wear out even after repeated use, make precise drilling easy.
• 100% Satisfaction Guarantee: Every AUDEL product includes 60days money-back & 24-month warranty and a friendly customer service.

Description Description: 100% brand new and high quality Titanium Nitride Coated, reduce friction and heat and increased service life. 3-sided leg design to prevent slipping when in the feed. Two-flute design gives you faster, smoother cutting. 4-32mm in 15 steps (4,6,8,10,12,14,16,18,20,22,24,26,28,30,32 mm). Package： 1 Pcs of 4-32MM Drill Bit