Left Hand Torsion Ramp Spring for Heavy-Duty Trailer Ramps Ecco It has a detented spool

It has a detented spool to allow for adjusting linkage without shutting off air pressure

This steel crank arm tarp system from Buyers Products keeps a payload in the truck and out of the weather

Full-length 5-1/2 in

Door MaterialAluminum

Left Hand Torsion Ramp Spring for Heavy-Duty Trailer Ramps Ecco It has a detented spoolBuyers Products Torsion Ramp Spring acts as a "lift assist" for ramps that require manual deployment. Available as a right or left hand coil. 12. 879 lb. Spring Rate. Acts as a "lift assist" for ramps that require manual deployment. Landscaping Trailers Open Style Trailers Ramp spring is designed as a "lift assist" for trailer ramps. Available in left hand or right hand coil, springs have a plain finish.