Description of Driak Titanium Drilling Set - 10mm x 45mm HSS4241 for Effective Drilling
HSS Step Cone Drill Bit Titanium Coated 10-45mm Round Shank Hole Cutter Tool. Suit for use in hardness under 25. Surface treatment: titanium. 8 step:10,15,20,25,30,35,40,45MM. Two flute design for smoother cutting.