Hss Impact Step Drill Bit For Metal  

Hss Impact Step Drill Bit For Metal The groove drill bit is made of hss and features a spiral groove design to reduce cutting resistance and make it sharper. Hexagonal or straight shank design with high torque. Strong bearing capacity. The reamer straight drill bits can drill multiple apertures and is widely used. The step drill bit has strong impact resistance, making drilling easier. The step drill bit can drill holes on metal surfaces, and its unique groove design helps reduce heat accumulation and improve drilling speed, thereby improving drilling efficiency. Product Features Exquisite spiral texture with double back corners to avoid slipping. Super large groove design, large chip holding space, good chip removal performance, and fast speed.        The step drill bit is made of high-quality high-speed steel and has undergone high-temperature heat treatment, making it durable and not prone to rusting.…