standard TwinBox Machine Tap + Twist Drill, DIN 371, HSS-E, M 4 x 0.7 

for general use - non abrasive material up to 900 N/mm² - unalloyed and low alloyed steel - for through holes HSS-G Twist Drill DIN 338, Typ N bright finish, profile ground Thread type: metric ISO-thread DIN 13 Norm: DIN 371 Material: HSS-E