Strovolt 70mm x 50mm TCT Annular Core Cutter Industrial Tungsten Carbide Tipped Mag Drill Bit Heavy-Duty Hole Saw for Stainless Steel, Rail & Hardox STRO787050

The Strovolt STRO787050 is a premium 70mm TCT (Tungsten Carbide Tipped) Annular Core Cutter, engineered for demanding metalworking applications. With a massive 50mm (2") cutting depth, this industrial-grade tool effortlessly penetrates thick structural beams, pressure vessels, and toughened alloys like stainless steel, railway steel, cast iron, and Hardox.

Featuring a high-efficiency hollow-core design, the STRO787050 focuses all drilling energy on the periphery, resulting in faster penetration, lower torque requirements, and a mirror-like, burr-free finish that eliminates secondary deburring or reaming. The ultra-hard TCT tips, with a proprietary multi-angle grind, maintain structural integrity at temperatures exceeding 900°C, ensuring a long service life in abrasive materials.

The shock-resistant Chrome-Vanadium alloy steel body provides the flexibility to absorb vibrations during large-diameter drilling without fracturing the carbide teeth. The precision-ground 19.05mm (3/4") Weldon shank ensures 100% compatibility with industry-standard magnetic drill presses.

The triple-edge tooth geometry, arranged in internal, middle, and external stages, balances cutting force, eliminates chatter, and ensures a smooth breakthrough in thick plates. Deep, high-volume spiral flutes rapidly evacuate metal shavings, maintaining optimal cooling during full 50mm deep-hole cycles.

This superior efficiency delivers high-tolerance holes with zero pre-drilling or step-drilling required, significantly reducing labor time on job sites. The 70mm diameter is vital for structural engineering, shipyard maintenance, oil rig fabrication, wind turbine base assembly, and precision clearance holes for M64 bolts in bridge girders and stadium construction.