CMBecker makes some of the the best draft equipment. They are the only plastic ball lock disconnects I sell because they are the most durable and there's nothing worse than having draft equipment failures in the middle of a busy event. These are designed and assembled in the US and manufactured in Germany. I have ones from 5 years ago still in my draft systems working as well as ever. The Chinese knockoffs can be found for half the price, but when one fails you'll spew hundreds of dollars of product, so why bother? I
This is a flared, gas disconnect with a 1/4" male flared lead. Flared disconnects are great for installations where you want the option to change disconnects frequently. If your line is going to always be attaching to ball lock kegs, I recommend going with a barb instead.
Flared leads also go well with our push-fit fittings and semi-rigid tubing (like our EVABarrier) as well. Or you can use a swivel nut and barb to attach to regular tubing.