Mul-t-lock #47 G-Series padlock with protector - 5/16" Shackle Hardened Boron Alloy Shackle (5/16" Dia. Shackle). Weather Resistant Drainage Holes Corrosion Resistant Steel Plated Brass Body Drill and Pick Resistant Cylinder MUL-T-LOCK's Patented new MT5 Key Control System Includes 2 high security keys and one Key Order card.