WARNING:All products are sold subject to the following Warnings and Cautions and with the express understanding that the purchaser and/or user are thoroughly familiar with their proper use. Indus Hardware assumes no responsibility for the use, misuse or misapplication of its products.Garage Door Cables, Springs, and attachments are under significant load and installations, adjustments and replacements should be performed only by a trained professional. Spring containment cables should be used in conjunction with Extension Springs. Aircraft Cables are not suitable for use in aircraft controls.