Trailer Torsion Ramp Spring Lift Assist Left Hand Side Landscaping TrailersOne New Aftermarket Replacement Left Hand Torsion Ramp Spring Lift Assist for Landscaping and Open Trailers This left hand torsion coil spring installs at the ramp hinge shaft to reduce the effort required to raise and lower heavy trailer ramps and gates. Designed for manual deployment ramps on open style and landscaping trailers, it stores energy as the ramp lowers and releases that energy to assist lifting. Sold individually left hand side only.