Cd juwel din 338 type n hss twist drills cd juwel 1108 0250 11 high speed steel drill bits designed according to din 338 type n these powerful solid drills are ideal for normal drilling work and all general metal drilling applications in steel steel cast alloyed and unalloyed up to approx 900 nmmsup2 grey cast iron malleable cast iron casting etc cd juwel 1108 0250 11 hss twist drill din 338 type n 25mm pack of 10