AmPro T11391 1/2-Inch to 3/8-Inch by 2-Inch Lighted Extension Adapter 1/2"(F)*3/8"(M) 2-inch with 3/8"(F)*1/2"(M) Adapter LED Provides Light Through Your Sockets 3 LR44 Button Cell Batteries Included (Replaceable) Chrome Vanadium Steel Easy On/Off Switch