It is a pair of rear shock absorbers fitting most of 150cc-750cc street bikes, Go Kart, Scooters and ATV with 320mm eye to eye distance.
To avoid further inconvenience, please kindly confirm the below item specific before purchase.

Item Specific:
Total Length: 350mm (13 3/4")
Length of Eye to Eye Core: 320mm (12 5/8")
Eye Diameter (with bushing): 12mm
Eye Diameter (without bushing): 16mm
Eye Thickness: 21mm
Eye Maximum Tensile Strength: 2,000 Kgf
Spring Thickness: 7mm
Spring Width: 60mm
Working Stroke: 60mm
Spring Stiffness: 110 kg
Maximum load: 200 kg (approx.440 lbs)
Air Reservoir: Adjustable
Factory Air Pressure: 0.4 Mpa
Maximum Air Pressure: 0.5 Mpa
Package includes:
1 Pair Shock Absorbers
Installation Manual is not included. Qualified mechanic fits or checks after fitting this product is recommended.

About us:
-We are professional auto parts company with our own factory, which means we have marvelous products with a pretty fair price. Contact me if you need auto parts of some other sizes or colors.
-We focus on the design and manufacture of automobile parts DIY accessories.

Some other size of shocks or accessories for your reference:
375mm(eye to eye):
https://www.amazon.com/dp/B06X6H925R

340mm(eye to eye):
https://www.amazon.com/dp/B01MZI9O6M

400mm(eye to eye):
https://www.amazon.com/dp/B01NA072CI

350mm(U-type holes to clevis):
https://www.amazon.com/dp/B06WVC7XJK

280mm(U-type holes to clevis):
https://www.amazon.com/dp/B06VVTNKG2

415mm(U-type holes to clevis):
https://www.amazon.com/dp/B071VQXQPF

320mm(U-type holes to clevis):
https://www.amazon.com/dp/B07G3XZTBW

280mm(eye to eye):
https://www.amazon.com/dp/B07GLPWLJF