Just saw this at Freda Watchstraps. Its a bit different, and more costly, but for a more expensive watch with a thicker strap it just might be worth it.
So, what's different? Push button, double fold, stainless steel with the
added features of a screw to secure the end to “the point” (that is the long end ) and
screw in spring bar to easily add to “the buckle” (shorter side of the watch strap).
Price is $49.95 and includes a free Swiss screwdriver (.8mm) for the buckle side attachment. Sizes 16mm, 18mm, 20mm, 22mm
Even comes with a choice of stem length. The longer stems are 4mm for extra thick straps (examples; Liberty, Jumbo) and the regular stem is 3mm which will fit most straps (90%). The 4mm stem is only avaiable in 18mm, 20mm and 22mm.