Ouch! That tool costs as much as the carb. The 90 degree ratchet would be far better, if it fits in there width-wise. Here is a much better-looking set. The 41-piece version has both long and short bits. Once in a while tools like these are very handy to have lying around.
https://www.amazon.com/TOMMARS-102-P...7&sr=8-25&th=1
I have this cheapo from Harbor Freight. Might do the job as is, or might need a longer bit.
https://www.harborfreight.com/8-piec...ver-92630.html