<br/>All DURA-LIFT torsion springs are manufactured from Class 2 high-tensile, oil-tempered spring wire, meeting ASTM A229. All of our torsion spring wire is coated for improved corrosion resistance and easier handling. Both 10,000 "standard" cycle and 25,000 "high-cycle" springs are available in left or right wind, and in precut or longer lengths. Both the winding and stationary cones are professionally installed for safe operation. Two 12-inch winding rods are included with all orders. Torsion springs are designed to lift specific weights and should be replaced with springs of the same size and wire gauge. Make sure to correctly determine your wire gauge, inner diameter, and length over coils.<br/><br/> <strong>TECHNICAL DETAILS:</strong> <ul> <li>.250 wire gauge</li> <li>39" coil-to-coil length</li> <li>2" inner spring diameter</li> <li>Left-hand spring wind</li> <li>2x winding bars included</li> </ul> <strong>DURA-LIFT™ 100% SATISFACTION GUARANTEE</strong>: <br/><br/> DURA-LIFT™ products are distributed exclusively by <b>WESSOL</b> and are warranted against defects or failures for one year from the purchase date. Should you incur a defect or failure during this period, <b>WESSOL</b> will assist you or replace the product(s) at no additional cost. <br/><br/> <strong> Need Application Help? </strong> <br/><br/> We know that you want to be sure that you are replacing the correct garage door hardware! If you have any questions about this product's compatibility for your specific application, please reach out and ask our experts! <br/><br/> <strong>DASMA WARNING:</strong> <br/><br/> HIGH SPRING TENSION CAN CAUSE SERIOUS INJURY OR DEATH. DO NOT adjust, repair or remove springs or parts to which springs are connected, such as steel brackets, cables, wood blocks, red colored fasteners or other parts of the counterbalance system. Adjustments or repairs must ONLY be made by a trained door systems technician using proper tools and instructions.