u/midteriyaki

I’ve seen people recommend both 5/16 and 1/4 online i went to the store and neither fit my screw but i realize now why (haven’t had coffee yet very tired) but i don’t know what size to get . anyone who has a similar set up have any recommendations?

I really like the insiders, was wondering if there are any sites similar even if it’s not free the discounts are so great, would love to find more similar websites thank you