Comparison : Item # D4130151, 90° RH HSS Spotting & Centering Drills, (USA)
Item # D4130181, 90° RH HSS Spotting & Centering Drills, (USA)
Item # D4130251, 90° RH HSS Spotting & Centering Drills, (USA)
Item # D4130311, 90° RH HSS Spotting & Centering Drills, (USA)
Item # D4130381, 90° RH HSS Spotting & Centering Drills, (USA)