Puur 9.00x175x275 mm KOONUS MORSE-1 HSSCo EXTRA-PIKK Serie 2 DIN1870RN ZV5001/T1000 STIMZET

High-efficient extra long drills with the higher thermal stress resistance, special flute profile increasing the drill rigidity, are recommended for deep-hole drilling by means of jig bushes of parts made of hard-to-machine materials, alloyed steel and cast steel, especially for drilling of cold- or hot-work tool steel, crankshafts, heat-treatable or carburizing steel, stainless steel.

λ = 35°÷40° ε=128°