The Blue Demon combo tungsten pack is a perfect way to test out different tungsten types for your application.  All tungsten electrodes are 7 inches in length, and come ground and annealed.

Contains
2 Pcs Pink EWG Multi-Mix Rare Earth Tungsten
2 Pcs Green EWP Pure Tungsten
2 Pcs Gray EWCe2 2% Ceriated Tungsten
2 Pcs Blue EWLa2 2% Lanthanated Tungsten
2 Pcs Red EWTh2 2% Thoriated Tungsten