Ivanko Dumbbell Allen Wrench Size?

I was wondering if anyone knows what size Allen wrenches to use to tighten ivanko dumbbells? I thought it was 8mm but that size is too small, does anyone have first-hand experience with this?

No first hand experience, but have you tried 9 and 10 mm?

Ten is too big and the set I have doesn’t include 9, that’s my next step to try a 9, just wondering if anyone knows for sure. I was told 8 and I saw 8 on a website so it’s just weird it doesn’t fit.

That’s funky. Any chance they’re in imperial instead of metric, and it’s an in between size?

There’s probably a chance, I’ll figure it out eventually I’m sure.