This roller wheel features a concave groove around the edge to allow more control while installing the spline to hold a screen in place. The wheel thickness is 3.8mm, if you need a different size please leave a comment and I can add more.

The handle is unchanged and is available to download from the original model: [https://www.thingiverse.com/thing:3582803](https://www.thingiverse.com/thing:3582803)