The WELDBrush 500 is based on the functionality of WELDBrush 300 but includes two additional functions:
1) Cleaning and Passivation
2) Electro-chemical polishing
It also has twice the power of the WELDBrush 300, and the cleaning and passivation is doubly faster. The electrolytic polishing shine on welding or surface treatment, this is generally used to treat white rings that may occur after welding. Plating adds a metal film on a workpiece using a fluid intended for this purpose.