Additional information
| Set | 1/16-3/8" 21 Piece, 1/16-1/2" 29 Piece, 1/16-1/2" 21 Piece |
|---|
BORDO Cobalt HSS-Co5 Jobber Drill Fractional Set
- Bordo Fractional Cobalt Tough HSS-Co5 Twist Drills.
- ANSI B94-11
- 135° Split Point (crankshaft point).
- Split point is self centering and the short distance from the drill axis to the outer corners results in faster penetration, reducing the need for end thrust.
- The 135° point should be used to cut harder steel materials especially in deep hole applications.
- In these situations it will produce thicker chips minimising work hardening of the cavity.
- Faster penetration reduces abrasion and friction along the cutting edges.
- Cobalt HSS Twist drills are extremely hard and provide superior performance and increased tool life especially in stainless steel and high tensile steel.
- Bronze Finish (gold oxide) surface treatment. The metallic brown coloured low temperature temper treatment is normally only used on cobalt tools for identification purposes.
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- Unlikely to deviate due to grain or imperfections in the timber (such as knots).
- Heavy duty milled flute design.
- Hardened cutting edge for long life in hard timber.
- Fully-forged bit for maximum durability.
- Resharpenable.
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