Quality product. I would recommend

Very nice well made tripod, but you definitely need a pier extension with this. My setup (72ed) on an AM3 makes contact with the legs of the tripod.

So yeah, if you're buying one of these, get an extension too.

Bought this to support my AM5N mount and a 90mm refractor, does the job no problem, but it’s very short so I had to buy the pier extension, which is pricey for an Al tube. The tripod is plenty stiff enough for my kit, I easily get 0.5 second guiding through the session.

Would have been 5 star but ZWO should make this tall enough to do the job without needing an extension.

I hesitated with this upgrade for a while, having used what I considered a fairly sturdy photographic tripod from a well known manufacturer with my 430mm refractor. However, with the newly assembled 6”RCT and AM3 I didn’t feel confident, especially with regards to vibration.
The TC40 is an entirely different beast. Very light but extremely strong and, like other ZWO purchased recently, very well made and a pleasure to use. It comes with optional spikes which are great for grass when rubber stubs can slip. Once locked, there is no wobble or movement even with the legs extended
I really like the clamping mechanism. I can now leave the whole scope/asiair/mount unit assembled when travelling, set the tripod up and just connect the mount without fiddly screws or tools that can get lost in the dark. A bit like a bayonet mechanism but rotates 360 degree. I use mine with the ZWO 160mm pier extension which is also beautifully machined. I can’t fault it, there is simply nothing I don’t like about it
Yes, it’s not cheap but probably the last tripod you will ever buy.
Great service from FLO, almost next day delivery despite living on an island

I recently bought the AM5 to get me to visit remote sites for imaging. I went with the TC40 as its has been purposely designed and built for supporting the AM3/AM5 for such a reason. I can report that it supports an Esprit 120 and accessories weighting in at 14.5Kgs easily. Just remember to or accommodate for possible balance issues when using a large weighted telescope east and west of the pier or mount head. Safety first as you don't want to damage or lose a prized telescope. So, weight the mount down using a suitable weight in the accessory tray. Fantastic support and delivery from FLO as is to be expected.