Made in the USA Gas Prop for Truck Caps and Campers Set of Two Makes Replacements More Economical. These Suspa C16-08941 Gas Props are high quality, US-made, and provide years of dependable use. Replacement of both units at the same time is recommended. WARNING: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.