Questions about Next Level Racing Castor Wheels

Load capacity? - No idea and the info is not available on their website (https://nextlevelracing.com/products/next-level-racing-lockable-castor-wheels/?lang=fr). However, as the seats are up to 150kg, I think they are adapted to support this weight anyway (and from a physical point of view, as the weight is distributed over the number of contact points... the more wheels there are, the less weight they support each...). Thread size ? - M8 (~7.8mm measured with a caliper) Wheel diameter ? - ~60mm (measured with a ruler) Are the castors suitable for parquet flooring? - Yes, I think so, but depending on the type of wood of the floor (hard or soft), I would avoid to leave a mark, maybe use a carpet if not sure.. Are 10 of the wheels shown really included for CHF 43.40? if so, why? in 99.9% of cases, you need 4 wheels... - the 10 wheels are really included. I personally use them on the Next Level Racing Flight Simulator (Boeing), and I need 6. On office chairs, usually there are 5 per chair (that's 2 bags of 5 in the box..). The kit is sold as 8 + 2 spares... will depend on what type of chair/structure they fit on. In any case and in my opinion, the wheels are really excellent, of a much higher quality than those of the Ikea office chairs for example. And it's just great to be able to move the whole chair on wheels. It was missing on the NLR flight simulator.

Yes, the castors are compatible. It is surprising that they are not included in the standard package. Given the weight and size of the flight sim, I think they are essential.