Comparison : Item # MXE01801-MW, 0.18 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.625 Inch (in) Free Length Music Wire Extension Spring
Item # MXE01802-MW, 0.18 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.75 Inch (in) Free Length Music Wire Extension Spring
Item # MXE01803-MW, 0.18 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 0.875 Inch (in) Free Length Music Wire Extension Spring
Item # MXE01804-MW, 0.18 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 1 Inch (in) Free Length Music Wire Extension Spring
Item # MXE01805-MW, 0.18 Inch (in) Outside Diameter, 0.018 Inch (in) Wire Diameter, and 1.125 Inch (in) Free Length Music Wire Extension Spring