With the Makita D-40163 spiral flute step drill bit, you can accurately drill fifteen different diameters from 4 to 32 mm without swapping accessories. It is the practical choice for installation work in control cabinets, cable trays, and metal fabrication. The spiral flute design delivers fast chip evacuation and clean, burr-free cuts in thin sheet material, ferrous, and non-ferrous metals without snagging or distortion. Thanks to the 10 mm 3-flat shank, the bit locks securely into your drill chuck without slipping under load. Featuring an 80 mm working length and a 102 mm overall length, you can enlarge, drill, and deburr holes smoothly with complete control.
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