This is an economical way to prevent your expensive Digitrax Radio and Infrared throttles from being dropped on the floor or set on the fragile scenery on your  layout. This neck lanyard allows you to hang the throttle around your neck, keeping it handy when needed yet out of the way when uncoupling cars or sorting car cards. Helps prevent lost or damaged throttles. Easy installation instruction included with each kit. Requires drilling a small hole in the bottom of the battery compartment. There is no disassembly of the throttle required other than removing the battery and battery cover during the installation process. This kit is recommended for all Digitrax radio and infrared throttles. It can be used with caution on tethered throttles but is not recommended due to the potential for damage to the cable or plugs. Price on this item is $6.00 Shipping on this item is set at $2.00 for the first kit and $.25 for each additional kit.(Throtttle not included)