... control metal copper core respectively,and through the way of multipath drives control flashing, realizing all kinds ... two root a group of form all the way electrode, each electrode corresponding multipath drive's circuit ... quantity: 6 core, 9 core;2.Spiral distance: 4 mm, 8 mm, 12 mm or so;3 ... .2 MM and 2.0 MM, other customizable; 4.Shape: round and other customizable; 5.Common color: transparent, blue ...