Looks great on my Apple Watch leather strap but I had to use a dremel to work all the corners/edges to round them off otherwise they are REALLY sharp and uncomfortable. Dremel or very fine sandpaper and a bit of time to smooth out the edges then I 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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