>>6145508No. The #11 is too long for fat style Xacto but too wide for skinny style Xacto. #26 is too wide to fit either.
I suppose you could trim them but they're tempered steel (?), whatever they are, they're not something you can cut easily. I tried very hard to cut them to retrofit them and failed. Ultimately, whether they will work for you or not is going to be a case of if you can get used to the handles. But provided you can, it's more efficient in every way.
There's also some 'fat' style handles if you'd prefer those.
https://equippedcat.files.wordpress.com/2014/02/scalpelhandles.pngThere's tons of them on Ebay.