5pcs M35 HSS Gold Cobalt Jobber Drill Bit Set For Stainless Steel, Metal, Twist Drill Bit Sets Supplied In A Box, 5mm-9mm Drill Bit Set

• 【High Quality 】HSS twist drill bit manufactured from M35 high speed steel with 5% cobalt, the molybdenum and cobalt added to create a hardened alloy for much faster cutting and extra longer life span.
• 【Pack Contains】The set includes 5pcs of M35 cobalt steel twist drill bits: 5mm x 87mm (1), 6mm x 94mm (2), 7mm x 110mm (1), 8mm x 117mm (1), 9mmx124mm (1), 5Pcs packed in a plastic box for easy usage and store.
• 【Cutting range】For drilling particularly tough or hard thin metal plates drilling applications such as stainless steel, hardened metal, cast iron, Cr-Ni and special acid resistant steels. Also work very well on standard metals / steels, RSG, aluminium, high temperature alloy, titanium alloy, non ferrous metals.
• 【Extremely Heat Resistant】twist drill bits Must be used and operated at 1500 RPM or greater for maximum efficiency. Straight shank allows for firmly holding and accurate centering, fit for standard drill chucks and regular round collet chucks
• 【Quality guaranteet】Buy with confidence, please feel free to contact us. If you have any problems, you can contact our customer service at any time. A 100% satisfactory solution will be given you within 24 hours. You do not have to worry about return and refund, in the end, we thank you for your support!

Carbide cutter head, drilling speed is fast. unique triangle angle design, easy posmonng drilling, greatly improve drilling effciengy, drilling performance is more intentional. Forging of high speed steel, hardness is not easy break.