Comparison : Item # D413610150, 60° HSS LH Combined Drills and Countersinks, Plain Type (USA)
Item # D413610250, 60° HSS LH Combined Drills and Countersinks, Plain Type (USA)
Item # D413610350, 60° HSS LH Combined Drills and Countersinks, Plain Type (USA)
Item # D413610450, 60° HSS LH Combined Drills and Countersinks, Plain Type (USA)
Item # D413614550, 60° HSS LH Combined Drills and Countersinks, Plain Type (USA)