Comparison : Item # D413610190, 90° HSS RH Combined Drills and Countersinks, Plain Type (USA)
Item # D413610290, 90° HSS RH Combined Drills and Countersinks, Plain Type (USA)
Item # D413610390, 90° HSS RH Combined Drills and Countersinks, Plain Type (USA)
Item # D413610490, 90° HSS RH Combined Drills and Countersinks, Plain Type (USA)
Item # D413614590, 90° HSS RH Combined Drills and Countersinks, Plain Type (USA)