• Nitriding Surface Harder - Enhancing wear resistance and fatigue performance, make your drilling process more smoothly. 
• Drill Faster - 118° drill bit with straight shank prevents walking and it drills faster than 135°drill bits. 
• Easy to Carry -  Come with a portable plastic bag with size index on it. Easy for selection, storage and carrying.
• Test strong Pentration - For Steel within 5mm thickness, soft metal, wood, plastic, aluminum alloy and other soft metals.