EDM Graphite Blocks, 12” x 12” x 3” +, EDM Sinker, Graphite

Description

EDM Graphite Blocks, 12” x 12” x 3” +, EDM Sinker, Graphite.
As per photos
I picked these up at a large machine shop auction. They had EDM sinker machines on site and were using this material for the electrodes.
Not sure of any exact grade but as stated above they were using for their EDM machines.
Thanks
John
Rack 2 Floor