Product name: MACH3 Cutter AlignerProduct use: various engraving machinesPower mode: ACUse: suitable for processing wood, acrylic, plastic, aluminum, iron, steel and other materialsHow to use:1 .Red is connected to the tool setting signal of the control card2. The black wire is connected to the control card G.Knife surface: diameter 25mmsize:Line length: 1.2mMaterial:metalcolour:Red+black / White+blackPackage Contents:1 x MACH3 Cutter AlignerOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.