Heller HSS-G Super Twist Drill DIN 340 Extra Long
- Heller 21386 8, These 4.2mm HSS-G super twist drills from Heller are extra long so can drill to greater depths. Sold in packs of 10. Heller 21386 8 0903 HSS-G Super Twist Drill DIN 340 Extra Long 4.2mm, Pack of 10