Clasp only (see photos).  Beautiful push button.  Just needs two leather strap parts. One without the keeper loops (usually the slightly shorter piece).  And another longer piece with the holes.  Just needs to connect to a 20mm wide short piece on one side with the included spring bar and then connect to the longer "holes" side on the other side.  Very high quality. The actual opening of the spring bar lug area on the clasp is about 20.2mm for a standard 20mm band.  The actual opening where the long "holes" side of the leather bands fit is about 20.2mm for a standard 20mm "short side" band (but remember no "keeper loops" are needed on that shorter side. Usually the keeper loops can be removed without showing too much).  If this doesn't sell alone as just a part, we may have to add the leather part to make it more marketable.  Let us know if you have one of our 20mm or 22mm bands in mind that are 20mm at the buckle and maybe we can create a listing just for you.  A particular band of ours converted to have this clasp.