【High Quality】HSS M35 Cobalt steel step drill, precision ground for extra durability and consistently accurate drilling or enlarging holes up to 0.08in. thickness (stainless steel sheet, steel sheet, Aluminium sheet, iron plate), 0.2in. thickness (acrylic, PVC, wood and plastics)
【Efficient Design】135° Split point two-blade special drill tip for perfect self-centering and fast drilling
【Long-Lasting Use】Spiral double-flute provides fast drilling performance and efficient chips removal, making boreholes clean and extending lifetime
【Popular Sizes】Includes 13 steps imperial drilling sizes: 3/16", 1/4", 5/16", 3/8", 7/16", 1/2", 5/8", 3/4", 7/8", 1", 1-1/8", 1-1/4", 1-3/8" inches. Laser marking of step size provide convenience and accurate drilling
【Designed for Performance】Tri-flatted shank fixed firmly without slipping in drill chuck, provides better force transmission during work