With an M2 high-speed steel core, the Tolsen 75113 Black and Gold HSS 4mm Drill Bit bores into industrial metal. A 130° split point stops the bit from walking during initial contact. This model updates the older 75081 by sharpening the point angle from 118° and adding a heat-resistant oxide coating.
Key Features
- 130° Split Point: Self-centering tip geometry prevents bit walking on metal. Starts holes instantly without using a center punch.
- Black/Gold Finish: Heat-treated oxide coating reduces friction and surface binding. Prevents rust during storage in humid workshop conditions.
- Industrial M2 HSS: High-speed steel construction maintains edge hardness at high temperatures. Drills through tough alloys without losing tip sharpness.
- DIN338 Standard: 75mm total length with a 43mm flute depth. Fits standard 4mm straight shank drill machine chucks.
Frequently Asked Questions
What is a 130 degree split point drill bit used for?
The 130° split point centers the bit on impact to prevent sliding. It reduces the physical force required to start a hole in hard alloys.
Can Tolsen HSS bits drill through stainless steel?
The M2 steel grade cuts through stainless steel at low RPMs. Excessive heat will dull the edge without proper lubrication or coolant.
