Kozlira TSAP780 Ramp Door Spring Kit with Winding Bars for 7' Wide Cargo Trailer - 80 lb Torsion Spring Repair Assembly Replacement Rear Ramp Door Assist System for Cargo Enclosed Trailers

["【WARM NOTE】The TSAP780 ramp door spring kit does NOT include Torsion Tube Shaft.","【PACKAGE INCLUDED】1 * 5.5 x 50 x 700mm 80 lb Torsion Spring, Clockwise (Right) Wind; 1 * Left Side Cable Drum with 12’ Cable Travel Capacity; 1 * Right Side Cable Drum with 12’ Cable Travel Capacity; 2 * 150” x 1/8” Stainless Steel Winding Cables; 2 * Bearing Brackets for Roof Mounting; 2 * Nylon Rollers; 2 * Torsion Spring Winding Rod/Bars; 1 * A Pair of Non-Slip Glove; 2 * Bolts with Nuts","【WIDE COMPATIBILITY】Fits most 7-ft wide trailer ramp doors. Designed for doors up to 160 lbs total (or ~ 80 lb per hinged section), providing torsion-assisted support for better control and easier operation.","【PRECISE ADJUSTMENT】Torsion spring winding rods allow safe, controlled spring winding and unwinding. Precisely fit the winding cones for fast, accurate balancing and smoother, safer operation.","【PREMIUM METAL CONSTRUCTION】Constructed from premium metal to resist corrosion and wear. Engineered for dependable, long-term performance in harsh outdoor environments. Chamfered winding bars provide a secure grip while helping reduce spring wear."]