HSS Step Drill 4-12mm x 1mm

Versatile HSS step drill bit for precise drilling in metal, plastic, and composite materials. Features graduated 1mm increments from 4mm to 12mm diameter, eliminating the need for multiple drill bits. High-speed steel construction delivers durability and heat resistance for demanding applications. Ideal for deburring, enlarging holes, and creating countersinks. Professional-grade tool suitable for workshop, manufacturing, and maintenance work.