The Jet Gladiator UltraCord comes with 3 keys to fit all makes and most model PWCs including SeaDoo, Yamaha, Kawasaki, Polaris, Tigershark, and WetJet. There is also a stainless steel slip ring for connecting your own digitally encoded key to the lanyard. This versatile floating lanyard offers the operator the option of attaching to wrist or vest. Comes with free safety whistle attached. Will not replace digitally encoded lanyards.