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Name: | hss Drill Bit High Speed Steel Step Drill Bits Set for Metal Hole Drilling | ||||||
Material: | carbon steel, HSS 4241, HSS4341, HSS 6542, HSSco | ||||||
Quality Guaranteed: | Perfect quality with 100% Guaranted | ||||||
Process: | Fully Ground by high precision CNC Numerical Control machine and strict heat treatment | ||||||
Shank type: | Straight and Rotary Slots | ||||||
Standard: | Each drill bit is manufactured strictly according to exacting specifications | ||||||
Helix Angle: | Regular Spiral Type N | ||||||
Surface Finish: | Amber Color (Bright, Black Oxide, Titanium) or custom | ||||||
Features: | 1.Cobalt drill bits are more expensive than other drill bits, but if you regularly drill through metal, they are a good investment since they tend to last longer. 2.The drill bit is made of high-quality high-speed steel and its surface is treated with titanium plating. It has high hardness, good wear resistance and long service life. Six different types of drill bits meet the needs of different tasks. Step drill can be used to drill large holes at one time without replacing the drill bit. The drill bit is made by precision machine with excellent workmanship. 3.Precision ground point, flutes, body, clearance and drill diameter for the ultimate in accuracy and performance. Also can change into metric size if need,pls kindly contact me. | ||||||


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