National Hardware N281-022 Garage Door Extension Spring, 25" x 110 Lb, Black FREEOVER35 The flutes are ground behind

The flutes are ground behind the lands to funnel chips to the inside of the bit and away from the outside diameter

Bright zinc finish lock seam tubing is sturdy 1" seamless steel

golden glow

Machine screw

Patented enclosed spring

National Hardware N281-022 Garage Door Extension Spring, 25" x 110 Lb, Black FREEOVER35 The flutes are ground behindBlack garage door extension spring with safety cables. For 7' high doors with 25" springs weighing 110 lb white. For most garage doors with extension springs. 7688 25" x 110 lb Black garage door extension spring with safety cables For 7' high doors with 25" springs weighing 110 lb white For most garage doors with extension springs Boxed.