No matter, as @Mike_P said it's all a matter of leverage. If you can't manage that hit it with a heavy hammer but if you do that make sure you can support the crank on solid ground by removing the wheels or deflating the tyres otherwise your efforts will be dissipated.
Anyone worked out if these are Delta or Keo pedals?
I'd get a spanner for it.
https://www.tredz.co.uk/.BBB-DualFo...sALuA948oe-0-05kfFY1R8hi9bu1HZ2RoCbzMQAvD_BwE
Very hard to say.
Delta pedals are more pointed at the toe end.
Keo pedals are more rounded at the toe end.
If had to choose, I would say they are Delta, but wouldn't want you to buy delta cleats on my guess.
You say that but ...Yes mate, i offered up the largest hex key on my multitool and it deffo fits. Now the problem is not enough strength /leverage to turn the hex bolt.... Yes I'm turning it in the correct direction.
You say that but ...
It would be possible for an idiot to get confused by looking at the crank from the other side to normal. In fact, if said idiot was using cheap tools and a big lever they might even turn a hex key into a barber's pole by forcing it the wrong way. DAMHIKT
I'm sure you're not an idiot, but theoretically, if you were ...
The thought of doing this all again is just soul-destroying.
Get your LBS to do it for a few quid
I had a look online to see if I could find any published prices for pedal removal but couldn't find anything.
At a guess, I reckon a LBS would charge upwards of £15 for removing pedals. Be interesting to see what others think.
At the end of the day if you can't get them off then pay the LBS to do it.
Must admit I do all my own bike maintenance but if needs must then pay for it to be done. Better to have a useable bike than a frustrated rider.
Believe me in a few weeks time you will have forgotten about the £20 or so you have spent which wouldn't even get you a couple of portions of fish and chips nowadays!
I fully expect a few replies from people saying "fish and chips is only £6.95 at our local chippy"