Grohe 46138000 1/2 in. Quick Coupling, one-size

This was a perfect fit and easy (as DIY plumbing goes) to install. There are no instructions that come with the item, but I read the other reviews and googled it to figure out how to install it. Simply put, the black end is a screw in joint. The yellow (or whatever color) end is a pull-down release/lock. To remove the broken coupling, place a basin of some sort under the sink to catch water. TURN OFF YOUR WATER VALVES UNDER THE SINK. Reach up to the coupling with both hands, hold the coupling with one hand and pull down on the colored portion with the other. This will allow the coupling to be released from metal pipe. Carefully pull the coupling away from the pipe while staying away from natural flow of water. Allow the hose and pipe to drain out into the catch basin. Unscrew the black end from the hose and dry the hose threads. If the teflon tape is eroded, remove the old one and add a new one. Teflon tape is used on many screw in joints and is easily purchased at a hardware store. Screw on the coupling, but do not over-tighten. What does that mean? It needs to be secure enough to not leak, but not so tight that its as far as you can get it. Hand-tightening is fine. Theres no need for a wrench unless you have hand strength problems. Re-attach colored end to the pipe by holding the coupling with one hand, while pulling the colored portion down as you push it onto the metal pipe. Push all the way up and release the colored portion. You should hear/feel it snap in place. Tug down on it to make sure its secure. Voila! You are done. Remember to turn you water back on. Keep the basin in place until youve tested the installation fully. Watch for leaks. Turn on and off several times, running the water for long and short periods. Any leaks are probably from the black end not being tight enough. If the colored end is not secure, it will pop off while you are running the water. Last bit of advice, its worth paying extra for the overnight shipping, since you are saving a ton by not calling a plumber. I first checked to see if I could find the part at a local brick and mortar supplier, but had no luck. I doubt a plumber could get it for you faster unless the company carries it on their own.

Threaded on just fine. Snapped into place without issue. No more leaks! (I used this to replace my slightly older green coupling)

I tried like crazy to find this part locally or even in Denver, to no avail. And from the manufacturer these are rather pricey, running over $50 as I recall. That seemed rather steep for a piece of plastic with some compression fittings. So I ordered this one and it was the exact OEM part, at an excellent price. Installation takes a bit of effort, since I would assume this part wont fail until you have had the faucet for many years (in our case 17 years). So there may be some corrosion buildup on the line. Take some very light adhesive and alcohol to clean off the line and that will help this attach.

This a ingenious connector for using under the sink. However this is the third one that I have had to buy. I just wish they would have made it stronger because it can be easily broken if you hit it with something under the sink, like changing the garbage disposal or have some pull the sprayer out too far.

Easy to use and a big improvement for the original connections

It is exactly one I want.Quality is perfect and it is so easy to replace the broken one.I will keep on buying GROHE products,because the parts are easy to buy at Amazon.

Very easy to install and solved my problem.

Shipment arrived as promised

Installed without difficulty . Thank you!!