Application:3D PrintersCNC EngraversHot ire MachinesLaser Engraving MachineCamera SlidersPlasma CuttersRoboticsFurnitureWoodworking DIYAnd much moreMaterial:aluminumDiameter: 8mm 10mm 12mm 13mm 16mm 20mm 25mm 30mm Model:SK8 SK10 SK12 SK13 SK16 SK20 SK25 SK30Package Included:1pc