HSS Titanium Coating: Industrial high speed steel Black and Gold construction, coated by titanium nitride ensures maximum durability and sharpness, can reduces the friction, runs cooler Product Feature: 118° Split point tip accelerates cutting speed while preventing angled walking away from center. The two flute design provides a smoother cutting, chip removal quickly Drilling Different Size Holes: The bits set include 5 standard bits that can replace 50 individual drill bits. Great metal drill bit for metal, wood, plastic board. Suitable for home DIY, handyman, professionals Automatic Center Punch: The punch delivers a high-impact strike when pressed against surface, S2 steel spring punch provide accuracy and precision Convenient Storage: All the cone bit come in a well organized case for easy transport and storage "

GMTOOLS 6 Pcs - Black and Gold Step Drill Bits--High Speed Steel Durability

Our step drill bits are constructed from traditional HSS combined with a titanium coating to make them even more durable. This also proves the capability and durability of the drill to last through multiple drillings on surfaces such as: plastic, aluminum, copper, stainless steel, and so much more. Set comes with center punch to accurately mark your drilling point with ease.

Unique 2 Flute Design

Two flute design also lets the material particles escape easily for a much more clean drilling operation. With each step, you can feel the drill bit stop so you never drill bigger than you need to.

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