Feature

●Premium M35 cobalt steel, 66-69 HRC (Rockwell hardness scale), generally best heat, wear and chip resistance and long service life.
●3 times grinding the cutting edge, with the high HRC and heat resistance of the material, for cutting through stainless steel, iron plates, aluminum, channels, wood, PVC, acrylic, plexiglass and plastic.
●This cobalt step drill bit is typically able to run two to three times faster. Despite the higher price, the cost per hole when using cobalt drills is the lowest as it can produce so many more holes.
●[4-32mm] 15 steps (4mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 22mm, 24mm, 26mm, 28mm, 30mm, 32mm)


Description

Cobalt Step Drill Bit (4-32 mm/15 Steps) for Stainless Steel and Hard Metal, Professional HSS Taper Drill Bit Paring Drill Steel