The CST tube is the typical aftermarket tube used by Australian VSETT distributor, Ride Electric. It has a slightly longer valve than typical stock factory VSETT HOTA tube.
Suits 8.5x3 tyres such as the Tuovt on 5.5" rims where valve extends at 90 degrees with a true 90 degree tilt, such as motor hub wheels of:
VSETT 9 series (9/9+).
T9 including Zero 9, Dragon X9 and Bexley 9.
For non-motor hub wheels, consider the 60 degree tilt tube or a 45 degree valve of any tilt so that the valve can reside between the rim "spokes" and clear the swing arms on rotation.
The valve is bent relatively close to the tube making it well suited on scooters with narrow cavity for valve placement.
Typical weight 90g (not considered considerably thick, but also not underweight).
and the heavy 60 degree tilt variant, the ULIP 136 gram.
Will not suit Zero 8X (200x90 solid) and VSETT 8+ (200x60 solid) rear and (on more recent models) front.
With regard to Inokim makes:
This CST tube accompanies the official Inokim Light 2 series genuine replacement tyre which has CST 8.5x2.00-5.5 nameplate on sidewall. This tube also suits the earlier Light 2 series tyres which were Inokim branded with sidewall nameplate 8½ x 2 (50-139). The 50-139 designation was phased out with the introduction of the CST, although it is assume the specific 139mm internal diameter holds and now known as 8.5x2.00-5.5. My Mobelity suggests this 8.5x2.00-5.5 tyre, and hence this tube, also supports the Super Light 1. Note the Light 1 is also an 8.5x2" tyre, often has 50-134 tyre size designation such as this HOTA tyre. Inokim Light 2 series adopts 90 degree valve on rear, 45 degree on front (ref: Boardstore), which typical on single motor scooters.