Butterfly Deployant Clasp in Black (18mm)

The clasp is good. Helps protects the leather but at times the pushers might be a bit sharp and rub onto the skin. But works as intended

This thing is a god sent. I own 4 nice Seiko straps that come with deployant buckle. Seiko deployant buckle is a pain in the wrist for me, as the end curve where the buckle folds doesn't sit right on why wrist. I couldn't use those nice leather straps because of that.
This butterfly deployant buckle, on the other hand, sits perfectly on my wrist, right in the middle. Unlike what the other reviewer said, I never feel there's any sharpness with this buckle. Perfect fit! For reference, my wrist is 6.5".

For the price it's hard to complain about the quality, but the dealbreaker for me really is the comfort. The buttons where you squeeze to release the clasp are very sharp at the edges and have really taken the joy out of wearing the watch that it's on.

Quality material & excellent customer service. This is certainly a satisfying purchase.