Also available for rent is the Model 9-500 weld head. These are designed mainly for welding of components with stick-out as little as 0.25” (6,35 mm) in diameters from 3/32” (2,3 mm) through 1/2” (12,2 mm). This unit is water-cooled so it is capable of higher duty cycle applications. There is also a Quick Release Kit, which allows for remote loading of the clamp assemblies. This kit provides a 360 degree view of the weld joint, and enables the use of multiple clamp assemblies to further increase the duty-cycle.