This listing is for two Brand New Air House 2  1/2" port Bags made by Universal Air in USA. These are single bellow bags 

Specifications:

Min Height - 3"

Max Height- 11"

Usable Stroke- 8"

Diameter- 5.875"

Port Size - 1/2"

Hardware- No Included

Made in USA with Synthetic Rubber.

Thanks for looking fast free shipping buy with confidence positive feedback!!!