A set of two CNC machined brass bus bars need to be bolted to the circuit board to provide a high current path. This article is already included in the full kWeld kit and sold here separately to allow purchasing only specific components of the kit. You decide which parts of the complete system you want to purchase and which parts you want to source yourself locally.
The assembly and operating manuals are available for download (https://www.keenlab.de/wp-content/uploads/2018/07/kWeld-assembly-manual-r5.0.pdf and https://www.keenlab.de/wp-content/uploads/2018/07/kWeld-operation-manual-r3.0.pdf). Please make sure to study them carefully in order to ensure safe and reliable operation.