Professional wood drill bit, suitable for construction, installation, renovation, decoration industry, etc. Special steel, heat treatment, HRC48~50, high hardness, lengthened core, high concentricity. It will get double effect by matched use with mortise and tenon machine, the square hole punching needs to use electric drill, hammer & other tools. This quality set also comes with a convenient plastic storage case.
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3 days ago
2 weeks ago
