Record Player/Turntable Kanoot from Moth Group - Motor Pulley for 50 Hz needed

That's the one, I think. Pretty close at least.
But let me tell you this.
Friend of mine has Transrotor TT. And after he installed the new belt wow and flatter increased up to 0.20%.
Not sure was it Thakker or not, but there is a fact.
The 911 mm Thakker belt provide similar results, i. e. lower value for circumference is necessary for lower slip.

Measuring the length (whole circumference in stretched condition) according method number 2. under
https://vacationvinyl.com/how-to-me...d is one of,measure its length in millimeters.
i. e. motor pulley and platter outer diameter together provides a length value of 923mm.
I guess, this means a circumference below 900 mm (maybe 850 mm).

I ask via email the value for this belts and look forward for the replies:
https://www.analogueseduction.net/p...t-xperience-replacement-drive-belt-round.html
https://www.lpgear.com/product/MOTHKANOOT.html