High Speed Steel Lengthen Twist Drill Bit 2mm Black Oxide Round Shank 12Pcs Lamp Pipes Maximum Diameter Expansion Range: 27mm

Maximum Diameter Expansion Range: 27mm / 1- 1/16-inch

corrosion resistance and long service life

for Pontiac Models

04 Inch / 72x58x52mm(LxWxH)

Electrochemical Corrosion Coefficient: 1

High Speed Steel Lengthen Twist Drill Bit 2mm Black Oxide Round Shank 12Pcs Lamp Pipes Maximum Diameter Expansion Range: 27mmThe product is made of high speed steel, and the surface is black oxide. Smooth surface finish, long service life. Suitable for wood, malleable iron, aluminum, plastic etc. Great replacement for your dull drill bit to improve work efficiency. Straight shank design is more suitable for many electric drills (here is not included). Specification: Shank Type: Round Shank Tool Flute Type: Spiral Rock Well Hardness Grade: 63 66 HRC Type: N Type 120 Twist