Padlock with key is best used for marine recreation, saltwater applications, offshore security environments and severe uses Key lock features a stainless-steel lock body and shackle for maximum strength and corrosion resistance Brass 4-pin tumbler and dual ball bearing locking mechanism provide maximum weather, pick and pry resistance 2 in. (51 mm) wide lock body; 3/8 in. (10 mm) diameter shackle with 2-1/2 in. (64 mm) length, 15/16 in. (24 mm) width; Extended shackle for application flexibility Includes two padlocks with two keys; Both keys opens each lock