A no-nonsense watch strap to 3D print, when the Casio strap brakes, as they always do...
Can be used for a lot other stuff.
Be sure to measure the wrist size you want, and use the individual link number, accordingly.
Of course, any 3D program can be used to separate the 4 different link parts.

Print instructions

Print it, the strap's swivel pin parts standing up. In other words, one of the strap's edge sides, standing up.
See the printed sample photo.