3.5mm HSS Twist Extra Long For Fast Drilling In Metal

Feature: \n 1. The twist drillare made from premium high speed steel for increased durability.\n2. has a straight shank, which is more convenient to operate. Milled flutes with deep cut spiral that delivers fast material removal. The flutes of the\nact a passageway for chip extraction from the hole and for coolant to enter the hole.\n3. This finish gives a strongly adhering surface treatment that acts to retain fluid and prevent chip to tool welding, reducing the formation of a built-up edge.\n4. Drilling, or hole making, is the most common metalworking operation in the world. Twist bits are the most common type of\nused. Twist bits are commonly used to holes with hand operated drills, standalone presses, or lathes.\n5. This product is designed for impact applications, for fast drilling in block, masonry and concrete, ect. \n\nSpecification: \nFeatures:\n\n--\n\nStraight shank design is more suitable for many electric drills and drilling machines(here is not included)\n\n--\n\n: