Product review (3 stars): Kit worked, but after a trip to the hardware store to replace compression fittings
I got this kit to replace an old copper line to our ice maker that had cracked and sustained a pin hole leak.  I got it installed fine, but it took me about an hour of messing with the compression fittings to realize they just wouldn't get tight enough to hold the tubing in place.  The compression fittings seem to have a built in sleeve that no matter how hard I tightened, would not crush down on the line to secure it in place like it should.  Finally I went to the hardware store and replaced these with the compression fittings that use the nylon ferrules to crush down on the tube and lock it in place and it worked just fine.  I believe this is the reason there are several reviews stating the kit leaks at both ends, so make sure you either replace the fittings or after installing them give a nice tug on the tube before you turn the water back on to ensure it is in fact secured in place.