Set 3 pezzi punte per trapano a gradini HSS stagnate taglierina per fori a cono 4-32 mm trapano conico
1 X Storage Bag（Blue or black Only for 3pcs）. #1: 4mm~32mm, 15 Step, 102mm(L). 1 X 4mm~32mm Grooved Drill Bit. Surface :Titanium Plated. 1 X 4mm~20mm Grooved Drill Bit. 1 X 4mm~12mm Grooved Drill Bit.