10pcs 1/4”x 6″ Spectrometric Grade Graphite Electrode Rod Mil-spec MIL-E-8971B

10 Pieces of High Quality, Mil-Spec Graphite Electrode Rod, .242″ x 6″ NSN 5977-00-464-8433 which will tell you this: Mil-E-8971B, Military Specification: Electrodes, Graphite, Spectrometric Grade You can search the NSN and mill spec to find more information. Impurities for this grade Graphite are less than 2 ppm as you’ll see when you search the mil-spec. This will be repackaged out of the box of 50 pieces that’s pictured. USPS First Class shipping is included, “free shipping” ebay calls it.