Beta 416/SP19 SET OF 19 HSS DRILL BITS WITH SPECIALLY GROUND WITH DOUBLE PENETRATION CONE

SET OF 19 HSS DRILL BITS WITH SPECIALLY GROUND WITH DOUBLE PENETRATION CONE Fully ground cylindrical twist drills with specially ground drill bit with double penetration cone. Higher cutting speed: The special step drill (present from Ø 5 mm) makes a first hole of reduced size and the next cutting edge drills the actual size more quickly. Increased stability: The reduced drill bit facilitates double penetration cone. Increased durability: The superior quality of HSS steel, AISI M2, gives the drill an extended life for drilling in alloy and high-alloy steels, steels, stainless steel, iron, aluminium and metals. Perfect grip: The shank with 3 smooth planes (from Ø 5 mm) ensures a perfect grip of the spindle jaws preventing slippage and transmits the power in the best possible way. Technical data: ø 1÷10 x 0.5 mm Upper drilling speed R ≤ 900 N/mm² HV ~ 820÷850  521 g  115x170x40 mm