Multifunctional - A drill bit can be used to make holes of multiple sizes.
Nitriding treatment - Effectively improve the surface hardness.
Triangular Shank - fits into power tools chuck securely and eliminates slip.
29 TOTAL SIZE - Includes 3 bits with 4 - 12mm, 4 - 20mm, 4 - 32mm.
Description
These HSS 4241 drill bits are the perfect tool for opening holes in a variety of materials, with a variety of sizes in one set to suit your different needs.