Set of NWKa twist drills with cylindrical shank. The set includes drills in sizes 14, 15, 16, 16.5, 19, 20.5, 22, 25.5 mm.

Drills are made entirely by the grinding method, guaranteeing high accuracy and straightness of the holes.

Application: for industrial use, e.g. making holes in hard alloy and non-alloy steels, stainless and acid-resistant steels, heat-resistant austenitic steel, titanium and titanium alloys, structural steels, grey and spheroidal cast iron, tin–zinc bronze, aluminum bronze, zamak, graphite, sintered powdered metals, alpaca and in wood.

Product characteristics

• made of high-speed steel HSS with 5% cobalt additive
• increased elasticity and high resistance to wear and torsional stresses
• 130° tip angle provides precise and at the same time fast machining of the material
• allow high-precision drilling at higher speeds

Technical data

• Material: high-speed steel HSS-Co with 5% cobalt content
• Shank: cylindrical 1/2" (fits chucks from 13mm)
• Tip angle: 130°
• Drill sizes: 14, 15, 16, 16.5, 19, 20.5, 22, 25.5 mm
• Cutting direction: right-hand
• Production method: milled
• Finishing: ground