High quality 99.95% pure tungsten (W) rod conforms to international standard ASTM B760. You will receive a complementary material cert in the safely packaged shipment. All material is lot controlled, stress relieved, and formed through high temperature pressing and sintering processes. This rod is perfect for machine shops, labs, research and development, and DIY machinists. Also check out our Tungsten Alloy and Molybdenum rods!