Window stopper or clamp

I use this as a window stopper but its a clamp so yo can use it for squeeze or hold something.

There are 2 versions:
1 -> Cuerpo.stl and tornillo.stl, which its okay but if you have to squeeze it hard its not ergonomic

2 -> Cuerpo. stl, tornillo_v2.stl and llave.stl, here you can print a key (llave.stl) and then as many clamps as you want.