Spring: *Extra long 5″ (127mm) overall, 4-1/4 (108mm) coil wire tension spring for 8300, 8600 & 8700 CNC. Pack of 6.
When to choose the 855140-6 springs?
Extra Long Wire: These springs are ideal for pulling out slack in the wire when cutting wire is longer than 8′ (2438mm).
Super Steep Tapers (4 Axis): They also work well when doing 4-axis cuts that require a steep taper by allowing the wire to stretch the extra length.