Typical great Shimano quality, but beware of mixing this with 5603 chainrings
This chainring was bought to replace a worn 5603 39T ring. Since the 5603 rings are no longer available (anywhere!), I had to go to the 5703. Unfortunately, they are incompatible. Along with this ring, I purchased the 30T 5703 ring. After re-building the crankset with the two 5703 rings and retaining the 5603 50T ring, I discovered that they don't play nicely together. I then consulted with my LBS and they told me they had encountered the exact same problem recently and that, worse, even replacing the 50T ring with a 5703 version wouldn't solve it, as long as the crank spider was a 5603. According to Shimano, there should be no difference between the 5603 and 5703 spiders, but apparently there is. So I eventually replaced the entire 5603 crankset with the 5703, and of course that works just fine. So now this ring (and the 30T one) are spares - since they are getting harder and harder to find!
Verified purchase: YesCondition: New