Popular gas springs designed for marine, RV and automotive applications. Special Ni-Slide rod coating for excellent corrosion resistance. These gas springs can be used in salt water areas. Each gas spring has a 10 mm composite head socket fitting which is the standard size for ball stud style mounting brackets. The 6mm x 15mm (rod & cylinder dimensions) are lighter duty to standard applications. The 8mm x 18mm are for standard to heavy duty applications. Connectors sold seperately. E=Extended Length, C=Compressed Length, S=Stroke, P=Force(lbs.)