Twist Drills 4 x 175mm Extra Long Series HSS DIN 1869 PTG.
Range of applications A robust tool for use in diffi cult drilling conditions in extremely deep holes when swarf congestion prevents an adequate flow of coolant.
For use in steels and cast-iron having a tensile strength of up to 1000 N/mm².
Not recommended for nickelchrome steels or similar materials.
