Application- Specific Drilling for Steel and Cast Iron Top Drill S™ Top Drill S is the WIDIA line of solid carbide drills engineered to provide maximum performance and superior finish to application-specific tasks in steel and cast iron. • Victory grades WP20PD™ for steel and WK15PD™ for cast iron are specially designed to resist high heat and wear. • Lower cost-per-hole and greater productivity due to high MRR and long tool life. • One of the broadest ranges in the market for diameter selection, length series, and coolant options. To learn more about the benefits of WIDIA™ Top Drill S, contact your local distributor.