Suits 8.5" tyre on 5.5" rims where valve extends at 90 degrees with 60 degree tilt. Valve length is relatively generous and is longest of the 60 degree tilts stocked.
Images below contrasts the Tuovt brand tube (left) with this tube (right) at ~5PSI. Both have a 90 degree bend, however the Tuovt (left) bends a true right angle, whereas this tyre (right) has the 60 degree tilt. It was observed the Tuovt (left) was lighter (~70 grams). It developed a flat when running in Tuovt 8.5x3 Tyre. It is observed the Tuovt did not inflate uniformly which may have contributed to premature failure from pinch puncture (marked silver X).