The fein dura hss tin mag drill hole cutter is built for professionals who demand accuracy, endurance, and speed. Designed by fein, a brand renowned for industrial grade performance, this core bit combines high speed steel hss construction with a titanium nitride tin coating to deliver exceptional drilling results in stainless steel, structural steel, and mild steel. The 3 4 inch weldon shank ensures compatibility with standard magnetic drilling machines, while the tin coating improves heat resistance, reduces wear, and supports fast, clean cutting. Engineered to extend tool life and reduce downtime, this cutter is ideal for frequent, demanding use in industrial environments. Features and benefits bull high speed steel hss core bit with titanium nitride tin coating bull 3 4 inch weldon shank – fits most magnetic base drilling machines bull tin surface offers excellent wear resistance, reduced friction, and cooler cutting bull designed for stainless steel, structural steel, and mild steel bull optimised chip evacuation ensures smoother operation and cleaner holes bull built for long service life, even under continuous industrial use specifications cutting depth 25 mm bore Ø 20 mm