Master Lock Magnum Padlocks: Our Magnum Padlock section features the Master Lock Commercial Magnum Locks and Master Professional Magnum Locks, including the M1KD, M1KA, M1LF, M1KALF, M1LJ, M1KALF, M5KD, M5KA, M5LF, M5KALF, M5LJ, M5KALJ, M15XDLF & M15KALF, M5115XDLF, M515XDLH, M40XD and M50XD Padlocks. Our Commercial Magnum Padlocks includes the M1 STS and M5 STS Locks, including M1KDSTS, M1KASTS, M1LFSTS, M1KALFSTS, M1LJSTS, M1KALJST and M5KDSTS, M5KASTS, M5LFSTS, M5KALFSTS, M5LJSTS and M5KALJSTS Padlocks.