Excellent workmanship: Carbide steel (45 percent carbide content). These bits are ground from a solid piece of metal instead of containing soldered on cutting edges
If your think the blades are not very sharp, you can sharpen them as your want easily
Top quality: Made of high carbon steel, Sharp edge, high harness, accurate positioning, high precision, smooth cutting, impact resistance, high toughness. more smooth, less noise
More size: A variety of sizes to provide a choice. Size: 15mm,20mm,25mm,25mm,30mm,35mm (5/8-Inch,3/4-Inch,7/8-Inch,1-Inch,1-1/8-Inch,1-3/8-Inch)
Widely used: It can be used for wood products perforation, mounted spherical door shoot tip, drawer, plastic products, wood, plywood, etc
Applicable tools: It suitable for pistol drill, bench drill, vertical drilling machine hand held electric drill, stand motor-driven drilling machine and mobile ribbon type magnetism drilling machine, etc