Leviton 2KL Replacement Keys For Use with Key Lock Switch Heavy-Duty Key-Operated Locking Mechanism for Maximum Tamper-Proof Operation in Schools, Institutions, Public Housing, Trailer Parks, Loading Docks, Freight Yards and Other Areas For use with the following Leviton Key Lock Switches: 1221-2KL, 1222-2KL, 1223-2KL, 1224-2KL Chrome Lock Dome with 2 Keys Provided per Switch Back and Side Wire Terminals Accept up to #14 - #10 AWG Copper or Copper Clad Wire Large, Combination Head Terminal Screws with External Clamps Triple-Combination Mounting Screws for Fast, Easy Installation