Package Include: 40pcs Welding Rods/ Roll( 1pc9.8inch ) Welding rod Main characteristics: 1. Very high-wear resistance, seven times wear resistance than steel, four times than PTFE. 2. Very high anti-impact resistance, two times impact resistance than PC, five times than ABS. 3. Good self-lubrication, the same as PTFE, better than steel and brass appended lubricating oil. 4. Good anti-corrosion resistance, it has very stable chemicals property and can endure the corrosion of all kinds of corrosive medium and organic solvent in certain rang of temperature and humidity. 5. Very high-inadhesion resistance, the surface of product hardly affixes other material. 6. Very high-impact resistance, ten times impact resistance than PA66, eight times than PTFE. 7. Good low temperature resistance, in liquefied nitrogen (- 196), it still has the prolongation. few other materials can reach to this performance.