● MATERIAL:
　 High speed steel (SKH51)
● SIZE RANGES:
　 12mm～100mm diameter
● APPLICATIONS:
　 For tough drilling on 1.6mm thick iron plates.
● USES:
　 (A)Electric work:
　 1、Electric control box' s push-button hole.
　 2、Refrigeration machines.
　 (B)Iron work:
　 1、Sheet metal work.
　 2、Drill hole installation.
● SPECIAL FEATURES:
　 (A)Sharper teeth tip for easier cutting.
　 (B)Longer product lift,teeth stay sharp longer.
　 (C)Betterchip clearance.
　 (D)For precision hole drilling.
● Surface Treatment:
　 (A)Nickel coated (B)Golden finish
　 (C)Sand blasted (D) Black oxide