5pcs Large Cobalt Step Drill Titanium Core Drill Hole Cutter Bit 1pc 5 Inch Spring Loaded Automatic Center Pin Punch in Drill Bits from Tools
Material:High speed steel
Long Life True M2 high speed steel
Automatically deburrs holes as you drill
Large bit has 3-sided shank and small bits have hex shank to prevent slip in drill chuck
Cobalt coated to reduce friction and run cooler
SELF STARTING - No need for a pilot hole.
This set replaces 50 individual drill bits. Two-flute design gives you faster, smoother cutting. 3-sided (TRI-FLAT) shank will not slip in your drill's chuck. Cobalt coated for smoother cooler cutting.