I ordered this with awesome focuser https://www.firstlightoptics.com/moonlite-focusers/moonlite-cr-classic-crayford-focuser-for-newtonians.html I put it easyly on Celestron 8"Newtonian tube as if it's custom produced for tube. Perfect!

Well made and Easy to fit.

Although there are many different holes pre drilled to fit different scopes, i still needed to file mine out a bit to get it to fit properly, otherwise like was getting in through the gaps. Its a shame this kit kit isn't of the same quality as the moonlite focuser, which is excellent.

This kit made fittinga Moonlite CR2 focuser to my SkyWatcher 300P Flextube easy. It has all the holes you need to attach to the OTA without drilling. The supplied spacers allow you to match the focus height of the focuser you are replacing.
Top tip is to use a head torch to see the holes when fitting to the tube.