Are these version 2? Same as chrome ones.

Yes they the same, I have both sets so, I can confirm that they're the same

Whould these fit fms fcx or furitek caymen? Thanks

They are for 1:18 scale crawlers, but they're only a few bucks, so try em out. You could probably cross reference sizes though to find out for sure. I know the hole to attach the shaft is a d-shaped hole.

Any idea if these will work with the K10 High Trail?

I use them on my K10 Monster Truck build with 59mm INJORA shocks. It's at their limit, but functional. I think INJORA just came out with a stainless steel version, specifically for the K10, on their website.

ASIN	B0C7GQ6MFL
Age Range Description	Kid
Best Sellers Rank	106,742 in Automotive ( See Top 100 in Automotive ) 51 in Car Drive Shafts
Brand Name	INJORA
Colour	Silver
Customer Reviews	4.7 out of 5 stars 473 Reviews
Educational Objective	Develop manual skills and understanding of mechanical components
Item Dimensions	25 x 25 x 51 millimetres
Item Weight	0.02 Kilograms
Manufacturer	INJORA
Material Type	Steel
Maximum Age Recommendation	144
Number of Players	1
Operation Mode	Manual
Power Source	Manual
Size	Small
Supported Battery Types	No batteries required
Theme	Vehicle
Unit Count	6.0 count

Drive Shaft with D Shaped Hole

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