Looks good with my custom leather Apple Watch strap, but I had to dremmel all the corners/edges to round them out because they are REALLY sharp and otherwise uncomfortable. If you have a dremel or very fine sandpaper and a little time to smooth the edges I would highly recommend this fastener. The buffed spots are metallic instead of black, but you won't see them when you wear them. If you don't want to deal with that, I'd skip this clasp. Although all of the homemade fasteners I've tried have had this drawback. (I upped the grit from 2400 to 12000 with a special set of cloth-based sandpaper available on Amazon for about $15.)
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