This EZ-Set galvanized garage door torsion spring is made for doors that already use an EZ-Set winding system. It is the Orange B version with 0.192 wire, a 1.75-inch inside diameter, a 36-inch spring length, and left wind. The galvanized finish helps protect the spring from corrosion in damp or humid conditions. Check the wire size, inside diameter, spring length, color code, and wind direction on the existing spring before ordering.