n. MAGNUM TAP & DIE SETS SF-40TDI 4-40 thru 1/2" Magnum Tap & Die Set - 40 pc (Straight) SF-58TDI 6-28 thru 3/4" Magnum Tap & Die Set - 58 pc (Straight) SP-40TDI 4-40 thru 1/2" Magnum Tap & Die Set - 40 pc (Spiral)