Hyjoy 5/16" Cobalt Drill Bit (10pcs), M35 HSS Metal Drill Bit Set for Hard Metal, Steel, Cast Iron Box of 10

【10Pcs 5/16" Cobalt Drill Bits】10Pcs 5/16”(Diameter 8mm) 3”(Flute Length 76.2mm) Metal Drill Bits. This drill bit is with most drills available the market. ★M35 Cobalt -Speed Steel★ Industrial grade M35 -speed steel drill bit set, significantly harder than HSS in other similar drill bit sets. These drill bits include 5% Cobalt, enhancing wear-resistance and longevity Fully Ground Process 135° Split Point: The fully ground spiral design efficiently removes debris, reduces friction, and enables faster, cooler . The 135° split point with straight shank prevents wandering and allows for precise, quicker starts without needing center . 【Multiple Application】 Perfectly suitable for through Hard Metal such as Steel, Steel, Sheet Metal and Cast Iron as as Plastic, Aluminum Alloy, Wood and Other Softer Metals. ✔ Pay attention to speed, pressure and control during . 【90 DAYS 】If you are not completely happy for any reason, contact us for full refund or .