Set 5 pezzi punte per trapano a cono passo HSS titanio grandi utensili + custodia in alluminio
Large bit has 3-sided shank and small bits have hex shank to prevent slip in drill chuck. 3-sided (TRI-FLAT) shank will not slip in your drill's chuck. Cobalt coated for smoother cooler cutting. Automatically deburrs holes as you drill.