4pcs High Hardness HSS Metric Mortising Chisel Woodwork Square Hole Drill Bit Cutter Tool,1 Set With 4pcs Sizes NO5113

Feature:

Drill lengthened, high concentricity.

The whole heat treatment, HRC48-50, high hardness.

With the use of tenon machine, if the manual open hole, you need hand drill and hammer and other tools.

High quality material with long service time.

Specification:

Material: HSS

Color: As the picture show

Total length: 210mm

Clamping cylindrical diameter: 19mm

Type: 1/2\'\'(12.7mm) / 3/8\'\'(9.5mm) / 5/16\'\'(7.94mm) / 1/4\'\'(6.35mm)

(Note: The above size refers to the square hole drilling side length.

Please allow 1-2mm error due to different measurement way, and refer to what you actually received because of product detail 0differ. )

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