Comparison : Item # MXM03401-MW, 0.5 Inch (in) Outside Diameter, 0.034 Inch (in) Wire Diameter, and 1.25 Inch (in) Free Length Music Wire Extension Spring
Item # MXM03402-MW, 0.5 Inch (in) Outside Diameter, 0.034 Inch (in) Wire Diameter, and 1.375 Inch (in) Free Length Music Wire Extension Spring
Item # MXM03403-MW, 0.5 Inch (in) Outside Diameter, 0.034 Inch (in) Wire Diameter, and 1.5 Inch (in) Free Length Music Wire Extension Spring
Item # MXM03404-MW, 0.5 Inch (in) Outside Diameter, 0.034 Inch (in) Wire Diameter, and 1.75 Inch (in) Free Length Music Wire Extension Spring
Item # MXM03405-MW, 0.5 Inch (in) Outside Diameter, 0.034 Inch (in) Wire Diameter, and 2 Inch (in) Free Length Music Wire Extension Spring