You need this most basic tool to guide your way. Common brands are Maglite, Fenix, and SureFire.
Answer Flashlight
Overhead and utility shop lights are great when you plan on working in one area, but when you own a home, you can't count on maintenance issues always arising in the same place. You may need to crawl through an attic, maneuver through your basement or peer beneath the kitchen sink. Each of these jobs requires one basic yet essential tool: a flashlight.
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