TOP DRILL S™ for Steel TOP DRILL S for steel is a high-performance solid carbide drill with an application-specific design. Although the point geometry is strong enough to drill stainless steel and cast iron, it is engineered to maximise performance when drilling steel. The WP20PD™ grade, designed to resist high heat and wear, is the latest in WIDIA™ technology. The two-margin design facilitates excellent hole quality and less friction when drilling steel at high speeds. TOP DRILL S for Cast Iron TOP DRILL S for cast iron is designed with application-specific point geometry for maximum performance in cast iron materials. The point features corner chamfers that minimise breakout on exit holes. A four-margin design improves hole straightness, increasing tool life and extending cross-hole and inclined exit capabilities when drilling tough cast iron. The technologically advanced WK15PD™ grade is specially engineered to withstand high wear. WIDIA Advantage • Application-specific geometry with the latest WIDIA grade technology. • Lower cost-per-hole due to high MRR and long tool life. • Consistent performance from internally controlled supply chain: Powder > Rod > Grinding > Coating • Part of the complete WIDIA holemaking solution. • Broad range of standard lengths, diameters, and coolant options in one line, including extensive intermediate metric, inch, fraction, and wire sizes. widia.com T49