The WORKPRO 75-100MM Spiral Step Drill delivers precision drilling across multiple materials including iron sheet, steel plate, aluminum plate, and plastic. Its spiral flute design efficiently removes chips while maintaining clean, burr-free holes. The stepped configuration allows progressive drilling without requiring multiple tools, reducing setup time and improving accuracy. Ideal for fabrication, maintenance, and construction work where versatility and consistent results matter. Built for professional-grade performance on demanding jobs.