V7619, 2 Pack, 8' 8" x 1/8" Galvanized Safety Cable For Extension Springs, 1 End Has Bracket For Mounting To Track & Other End Is Looped & Ferruled For Quick Link, Use For Single Spring Hookups, Retains Pieces Of Spring From Doing Property Damage & Injury In Case Of Spring Breakage, For Garage Doors With 1 Extension Spring Per Side, Carded.