I remember my father constantly fiddling with the weird, silver dome work light clamped above our Sears radial arm saw as he showed me how to use it. What Modern Work Lights Bring to the BenchPortability. My DeWalt 20-volt work light has a handy metal pivot ring built-in behind the lens. My DeWalt 20-volt work light has a handy metal pivot ring built-in behind the lens. Build quality is especially helpful for outdoor and emergency work.