Let there be (even more) lightOur new inspection lights have been a big hit with our customers-so much so that folks have been asking us to bundle them together for convenient purchasing. With this set you can easily see inside instruments big and small, and evaluate a neck and fretboard better than ever before. Once you start using them, you'll wonder why you stayed in the dark for so long! The Guitar Shop Light Set includes: Ultra-slim Internal Inspection Light This 4" LED light is small enough to easily slip through any soundhole or f-hole, and won't generate any damaging heat. Only 1" wide and just 13/32" tall, it fits into guitars, mandolins, ukuleles, violins, even instruments with narrow f-holes with ease. Guitar Internal Inspection LightThis 12" light's flat back easily spans braces and stays level. The domed lights evenly illuminate the entire guitar, not just one small section. It's extremely lightweight and won't emit excess heat inside your guitar. Full Fretboard Inspection LightWhen you're evaluating a neck, you can never have too much light. This 24" light will illuminate every inch of most fretboards. When used with our straightedges, you'll instantly see any high or low frets, warps or twists in the board, or any problem areas you need to fix. Dual USB Wall ChargerThis charger (power supply) powers any of the lights, and can even power two at a time. Charger is a 120-volt AC electrical appliance. It has a U.S. standard Type A plug with two flat parallel prongs, ungrounded. USB 9-foot Extension Cable, Set of 2These two USB 2.0 A-Male to A-Female cables will work with all of the lights in the set, giving you the flexibility to use or install these lights anywhere.