This is a clone of the EPYX fastload cartridge.

Build details and the parts list can be found here: http://www.sys64738.net/ddifl/ddifl.htm

This is a gold plated board, so will be very durable and provide many years of reliable service.  The Freeload cartridge is a great starter cartridge project, easy to complete even for those with the most basic soldering skills. 

This is a complete kit, and comes with all the electronic components you need to assemble the cartridge, including one gold plated cartridge board.