Stop squinting! 1/2" and 3/8" Lighted Socket Drive Extensions shed a little light on the subject for LESS! We"ve all been there. Few things are more irritating than practically standing on your head under the hood or on your workbench, flashlight in your teeth, trying in vain to see into crevices and around corners. Why risk your dental work? These super-convenient Lighted Drive Extensions fit neatly between your drive and socket, and throw a brilliant glow right where you need it: directly onto the nuts and bolts you"re working on. What a bright idea at BIG BUCKS OFF! Lighten up: Maintenance-free LED lights; Includes 3 installed batteries per unit, plus a fresh set of replacements for each piece (12 total); Adapts to any socket; Side-mounted on / off switch; Knurled grip adapter; Professional-quality chrome vanadium construction; Ideal for any application.; Order yours now! 3/8" and 1/2" Lighted Socket Drive Extensions