Bright finish: Classic M2 High Speed Steel construction with Bright Finish for proven capability and durability. Strength & Hardness: Made with HSS M2 steel, Rock wall Hardness Level HRC 62-63. Package & Size: 5 Pieces in a plastic bag, Diameter 13/32 inch, Total length 5-1/4 inch, Working length 3-7/8 inch. Professional & DIY Use: For use on metal, wood & plastics. Not For Use On Concrete / Masonry / Stainless Steel. Perfect match for workshop or service vehicles. 135 Tip & Twist Design: Increases cutting speed with self-centering and prevents walking, clears chips and particles faster. Specifications:
Brand new and high quality.
Material: M2 High Speed Steel, Bright Finish.
Point Angle: 135 Degree.
Flute Type: Spiral.
Shank Type: Straight and Round Shank.
Specification Met: ANSI.
Indentation Hardness: 63-63 Rockwell.

High Speed Steel:
High speed steel construction provides ultimate durability, the cutting edge is hardened and honed for sharpness, chatter-free design with staggered cutting teeth ensure the precise countersinking and hole smooth clean.

Twist Design:
The split point tip and twist design increases cutting speed while easy self centering prevents walking. Say bye to all those chips and particles, with the twist design the drill bit can quickly clears them out, and leaves a clean, smooth hole.

Notice:
Please keep cool and gentle using, the working life of the twist drill bits can be largely prolonged by proper usage.
Not For Use On Concrete, Masonry, Stainless Steel.