The HEVES 7015 and 8102 use any type of laser including Diode lasers, such as Yag / Nd, Fiber or the modern DLLV (Visible Light Laser Diode). 7015 needs less energy than the HEVES 7007, works 3 times faster on Stainless Steel. 8102 still needs a lot less power for its operation than the others. This product requires so little energy and is so fast that it can still work with laser machines of 5 Watts of Visible Light Laser Diodes