Facom HSS Spiral Fluted Step Drill Bit

This comprehensive 13-step heavy-duty variant spans from 4mm to 39mm in 3mm increments, making it the ultimate solution for large-diameter hole requirements in HVAC installations, industrial metalwork, and ducting applications. The extended 107mm overall length provides excellent reach and stability, whilst the robust 315g construction delivers the rigidity needed for drilling larger apertures without deflection. Engineered for high accuracy drilling in sheet materials, this professional-grade step drill bit handles substantial hole sizes with confidence. The 3mm step incre