The Tolsen 75111 Black and Gold HSS Drill Bit bores through alloy steel and wood with a 3.5mm tip. M2 high-speed steel construction maintains structural integrity under extreme heat. This updated model moves to a 130° split point for better self-centering and replaces the older roll-forged finish with TiN coating.
Key Features
- 130° Split Point: Self-centering tip removes the need for a center punch. Starts holes immediately without bit walking.
- M2 High-Speed Steel: Industrial-grade alloy provides high hardness and heat resistance. Maintains sharp edges during repeated metalwork.
- Black & Gold Finish: TiN coating reduces friction and heat during high-speed rotation. Resists surface corrosion in high humidity.
- DIN338 Standard: 70mm overall length with a 39mm flute length. Fits standard chucks for common drilling tasks.
Frequently Asked Questions
What is the use of black and gold drill bits?
The gold coating lowers friction while the black oxide resists heat. This pairing prevents bit seizing during high-speed metal drilling.
Is Tolsen 75111 suitable for stainless steel?
The M2 steel grade cuts through stainless and hard alloys. Its 130° point reduces the force needed for metal penetration.
