Comparison : Item # MXS09501-SS, 1.25 Inch (in) Outside Diameter, 0.095 Inch (in) Wire Diameter, and 3.5 Inch (in) Free Length Stainless Steel Extension Spring
Item # MXS09502-SS, 1.25 Inch (in) Outside Diameter, 0.095 Inch (in) Wire Diameter, and 4 Inch (in) Free Length Stainless Steel Extension Spring
Item # MXS09503-SS, 1.25 Inch (in) Outside Diameter, 0.095 Inch (in) Wire Diameter, and 4.5 Inch (in) Free Length Stainless Steel Extension Spring
Item # MXS09504-SS, 1.25 Inch (in) Outside Diameter, 0.095 Inch (in) Wire Diameter, and 5 Inch (in) Free Length Stainless Steel Extension Spring
Item # MXS09505-SS, 1.25 Inch (in) Outside Diameter, 0.095 Inch (in) Wire Diameter, and 5.5 Inch (in) Free Length Stainless Steel Extension Spring