3PCS Step Drill Bit For Metal, Spiral Flute Unibit Step Dril

EZARC M35 AlTiN COATING STEP DRILL BIT SET 1 GALVANIZED PIPE 2 CAST IRON 3 STAINLESS STEEL 4 ALUMINUM ALLOY How will AlTiN coating affect the performance of step drills? AlTiN Coating, with a hardness of 89 HRC, offers excellent hardness and thermal properties. It provides great resistance to heat, wear, corrosion and can withstand temperatures up to 900°C. How do I properly use this step drill bit? Ensure the chuck is securely tightened on the power tool. Use low speed and apply light pressure on the workpiece until reaching the desired depth. What is the maximum thickness of the material used? Suitable for metal sheet up to 1/8 (3mm) thick and stainless steel sheet up to 1mm thick. 【C-Profile Design】EZARC step drill bits feature a triple-flute design for increased stability, effectively reducing deviation during the cutting process. 【M35 HSS Step Drill】M35 cobalt high-speed steel, through heat treatment, achieves toughness and bending strength that surpass standard high-speed steel, making this step drill bit more suitable for cutting hard materials 【AlTiN Coating】Step bits coated with aluminum titanium nitride, rated at 89HRC for exceptional hardness and thermal properties. This coating offers superior resistance to heat, wear, and corrosion, with high adhesion and low friction The spiral flutes and stepped design of the drill bits allow for seamless and efficient drilling through various thicknesses. 【Please Note】Material thickness: Suitable for metal sheet up to 1/8 (3 mm) thick and stainless steel sheet up to 1 mm thick. Due to the larger cutting angles, the startup speed may be slower