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.
- $9.80Product cost
- $28.99Suggested selling price
- $19.19Profit margin