Application:3D PrintersCNC EngraversHot ire MachinesLaser Engraving MachineCamera SlidersPlasma CuttersRoboticsFurnitureWoodworking DIYAnd much moreDiameter: 40mmModel:LMFP40LUU LMHP40LUU LMKP40LUUPackage Included:1pcsNote :This product supports customization, if there's no length you need, please touch me, I can customise any size you like for you