National Hardware® N281-006 Garage Door Extension Spring, 25"x70 Lb, Black SpecialDiscount 5/16" square shaft x 2-5/8"

5/16" square shaft x 2-5/8" length

Collet Diameter: 1/2"

(1) Dig a hold 8-12" in diameter and 20" deep that is wide at the bottom than at the top

Weathered Wood: 250–300 sq

National Hardware® N281-006 Garage Door Extension Spring, 25"x70 Lb, Black SpecialDiscount 5/16" square shaft x 2-5/8"Black garage door extension springs with safety cables. For 7' high doors with 25" springs weighing 70 lb orange. For most garage doors with extension springs. 7687 25" x 70 lb Black garage door extension springs with safety cables For 7' high doors with 25" springs weighing 70 lb orange For most garage doors with extension springs Boxed.