Medeco 55-020010 55 Series Brass Finish 1-3/4" Wide Body Lock Padlock With High Security Original (00) Keyway, specially designed for commercial/industrial use. This lock features a hardened solid steel body, a case hardened steel shackle, and hardened steel inserts that were strategically placed to resist drilling attacks. This lock has a virtually pick proof cylinder, and it has dual ball bearings that lock both sides of the shackle.