HSS Exchangable Drill Bits is a kind of econimical tool for drilling big size holes,
for holes Φ25~Φ130. It's low cost, high efficiency and long life, it can save the cost
of re-grinding blades.
It consists of Blade and Holder, they are mutually matched for different hole sizes,
matrial from M2, M35 and M42, coating is avaiblable by customer requests.
All sizes listed are for GOST, DIN and JIS size can be made also by customer requests.