Comparison : Item # D4130150, 118° RH HSS Spotting & Centering Drills, (USA)
Item # D4130180, 118° RH HSS Spotting & Centering Drills, (USA)
Item # D4130250, 118° RH HSS Spotting & Centering Drills, (USA)
Item # D4130310, 118° RH HSS Spotting & Centering Drills, (USA)
Item # D4130380, 118° RH HSS Spotting & Centering Drills, (USA)