Twist drill 20.0mm HSS-R reduced

RUKO twist drill DIN338 HSS, reduced shank. Vacuum-metallized, the black blade is made of durable HSS-R rolled steel. The manufacturing process makes the material more flexible, making the drill more resistant to breakage. Tip angle: 118°. Chip flute rise: 20-30°. Tolerance: h8. Suitability: cast irons, alloyed and unalloyed steels up to 900N/mm². 1 pc / plastic packaging.