Spiral Flute Step Drill Bit 4–39mm x 3mm Increment Somta Series 566 – M12 x 1.75 Green Band Gun Nose Tap and surface finish in internal

and surface finish in internal threading applications

Diameter: 3/4" (19

118° Point Angle: Ensures accurate hole starting and clean surface finish

The SOMTA 3480850 is a high-precision 8

Spiral Flute Step Drill Bit 4–39mm x 3mm Increment Somta Series 566 – M12 x 1.75 Green Band Gun Nose Tap and surface finish in internalThis high performance HSS Co5 spiral flute step drill bit is designed for fast, precise enlargement of holes in sheet metal, stainless steel, aluminium, copper, brass, and plastics. Manufactured from premium cobalt high speed steel (HSS Co5), it offers excellent heat resistance, wear resistance, and long service life, making it ideal for demanding industrial and workshop applications. The spiral flute design provides smoother cutting action, improved