ZEYUN Light Bulb 2D 4 Pin LED GR10Q, Round DD Bulb, 9W, 3000k Warm White, 2D Compact Fluorescent Replacement 900LM High Brightness

I replaced 3 16W CFL bulbs in my hallway with these 9W LED. They're at least as bright as the CFLs and turn on instantly. I like that Unlike other 2D LED replacements I've seen they're round rather than square so better match the light fitting.You need to bypass the baLlast first; just disconnect all of the wires into the balast and wire the mains directly into the light fitting (see picture). There are instructions included on which of the pins you need to connect.The old CFLs only lasted a a year or two so I'm hoping these will last much longer; I'll update this review if they fail.They are shipped from Germany so take a few days. Unfortunately the first set didn't arrive but after a couple of emails Zeyun put a new set in the post which did.