14mm-17.5mm HSS Gold Cobalt Jobber Drill Bit For Stainless & Hard Steel Drills
Material Quality: HSS-6542 High-speed Hteel Containing Cobalt. Application: Suitable For Drilling Various Materials Such as Die Steel, L-beam, Ordinary Steel, Angle iron, Aluminum, Copper, Wood, Stainless Steel Within 1-4mm, etc.