Heller hss g super twist din 1869 extra long drills heller 26123 4 this 5 x 170 x 245mm hss g super twist drill from heller has an extra long shaft making it suitable for drilling deeper holes or for reaching holes located at depth heller 26123 4 0916 hss g super twist drills din 1869 ex long 50 x 170 x 245mm