Total length: 290mm (12") 

Length of eye to eye: 270mm (10.5") 

Eye Diameter (Bushing): 10mm (0.4")
Eye thickness : 2.00mm (0.8")
Spring thickness: 11mm (0.43")
Spring Width: 70mm (2.76")

Spring Weight: 800lb
The eye of shock has tensile strength more than 2,000 Kgf
Fitment :  for most Chinese 50cc 70cc 110cc 125cc 140cc 160cc Pit bike Dirt Bike Gokart Moped Quad and Scooter.
This is also for those who upgraded the stock 50s with aftermarket H style swingarm

Package included : 

1 x Rear shock