HSS Saw Drill gives fast cuts and smooth cutting edges in wood,metal, etc. HSS SAW DRILLWe produce and supply full series of HSS saw drills for wood, metal cutting.Diameter sizes: 3mm, 4mm, 5mm, 6mm, 6.5mm, 7mm, 8mm, 9mm, 10mm, 12mm, 13mmHSS: 4241, 4341, 9341, M2Surface treatment: Bright finished , Tin-coated