5pcs / Pack 12.0mm High Speed Steel M35 Cobalt-Containing Twist Drill Fully Ground Stainless Steel Drill Bit

1. Material: M35 contains cobalt
2. Fully ground, industrial grade
3. Tool handle type: straight handle
4. Sharp and durable, durable and strong
5. Low friction of blade groove, smooth chip removal
6. Cooling type (internal cooling/external cooling): external cooling
7. Double chamfered edge, sharper, more efficient punching
8. Outer blade tip angle: 118 degrees
9. Unit weight: 40g-100g
10. Model: diameter 9.0mm: blade length 81mm, total length 125mm; diameter 9.5mm: blade length 81mm, total length 125mm; diameter 10mm: blade length 87mm, total length 133mm; diameter 10.5mm: blade length 87mm, total length 133mm; diameter 11mm: Blade length 94mm, total length 142mm; diameter 11.5mm: blade length 94mm, total length 142mm; diameter 12mm: blade length 101mm, total length 151mm; diameter 12.5mm: blade length 101mm, total length 151mm; diameter 13mm: blade length 101mm, total length 151mm