Standard rims provide better guidance, but tend to overheat. To overcome heat the larger diameters are designed with toothed rims.
- Long -lasting cutting performance
- Super strenght SP steel
- Precision balanced centre point
- 2 ground spurs
- 2 precision ground cutting edges
- Parallel shanks
- For drilling precise flat bottom holes of any size in softwood
- Create oval and arched openings at any angle
- Create niches for the installation of brackets/straps, frames/grids
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