LaserGear QUBE20W, Class IV or Integration Applications LaserGear QUBE is a Class 4 laser marking system that is ideal for use in an open environment or integrated into production lines. Featuring a range of MOPA fiber lasers from 20W to 60W, QUBE delivers both strength and speed to accomplish a variety of applications. Mount QUBE to a tool-post for marking applications which require open space and flexibility. Integrate QUBE into automated lines for unattended or turnkey applications.