LED Base Socket Adapter, Bulb Base Type Medium Screw (E26), Color Silver, Compatible with Grainger Part Number 429U43, 429U44, 472Z16, 472Z17, 472Z18, 472Z19, Compatible with Manufacturer Model Number LED21ED17/740, LED21ED17/750, LED35ED17/730, LED35ED17/740, LED35ED17/750, LED45ED17/740, LED45ED17/750, LED45ED17/835, LED50ED23.5M/730, LED50ED23.5M/740, LED80ED23.5M/740, LED80ED23.5M/750, Features For use with E26 Based Lamps for Mogul Base Applications, Length 1 3/8 in