Use these locks on your wire display hooks and deter theft. Attach to the end of your hook. • Stop Lock for Hooks: Simple easy to use plastic lock to keep shoplifters from sliding your products off the hook. Works on hooks up to .224" thick. Size .5"W x 1.5"H x .75"D. Use the magnetic key (sold separately) to remove from hook. Magnetic Key size .875''ma*dia.2''L • First Line Security Scanning Hook Lock: Works on your existing 2 wire scanning peg hooks. Works on hooks from .186-.250 diameter. Includes swing lock and key. Size- .625"W x 2.375"H x 2"D -Comes in Black Locks sold per case, Magnetic Key sold per each.