5pcs Hss Cobalt Multiple Hole 50 Sizes Step Drill Bit Set with Aluminum Case

Cocosoly Step Drill Bits Drill Holes On Metal Like A Hot Knife On Butter Cocosoly step drill bits set replaces 50 individual drill bits in 5 pieces step drill bits, which saves you a lot of trouble and space. Two-fluted design provides faster and smoother cutting. Cobalt steel along with titanium coating ensures this set with outstanding