This is a recreation of the focus tool that comes with the Roly Automation Lasermatic10
It is stepped for:
https://cad.onshape.com/documents/9df24481532aa97500f26248/w/1b79d10049fdc0351a9619bf/e/57ce9fbe6c1bb565f5e6734e?renderMode=0&uiState=66b0ffdd2f12c037043d7dc3
The author marked this model as their own original creation.