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71049231
Features: Unique step structure, a single drill bit can drill holes in multiple different sizes. Drill Bit Size: 4-12mm: (5 steps: 4 6 8 10 12) 4-20mm: (9steps: 4 6 8 10 12 14 16 18 20) 4-32mm: (15 steps: 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32) Package list: 3 × Step Drill Bits
Effect:This drill bit makes it possible to achieve deburring, chamfering, hole expansion and other functions that twist drill bit cannot complite.
Application:Step drill bit is suitable for workpieces with hardness below 25°, such as iron plate, aluminum plate, PV plate, insulation board, etc.
Specification:Material: High speed steel; Surface treatment: Blue coating; Shank: Triangle shank.
Long Lasting:Blue coating enhances drill bits' resistance to heat, corrosion and rust.High-speed steel construction can extend the life of the cutting edge even under extreme temperatures.
Advantage:Compared with ordinary twist drill bits, these pagoda drill bits are not easy to break off, effectively saving use cost.
