Ryobi leaf blower extension

UPDATE (July 26, 2021): Better fit, with no slot in the back.

This provides a narrower tip for the Ryobi 18V Whisper series P21010/P21100 style leaf blower. The point is to increase the air speed a bit to move things a little faster. It helps, not sure by how much.

It relies on the tab on the end of the nozzle, not all Ryobi leaf blowers have that.

This version has a slit in the back for pressure relief when putting on and taking off (didn't really work). The next version will remove the slit. The locking tab needs to flex quite a bit, I've broken at least one tab (on the extension) with an ABS version. The next version is planned to have a slightly raised tab so that it doesn't have to move as much to lock.