Killswitch Installation Kit for IRON AGE Kill Switches , Includes Drill Bit & Power Supply, Killl-switch Shown NOT included Ideal for Passive Pickup Configurations that don't have a battery system installed. Allows you to switch your LED on/off while keeping the Killswitch functional. This installation kit includes (1) Duracell 9v, (1) 9v Connector, (1) Rocker on/off switch, (1) Exact Diameter Forstner Drill Bit Our Forster-style bits produce a smooth mounting hole, the trick is to go slowly and from both sides if possible. Makes a great DIY project for your favorite guitar when coupled with a premium Iron Age LED Killswitch - Sold Separately Some soldering & wiring may be required depending on your guitar setup. LED Killswitch shown is SOLD SEPERATELY