... , Black, Other ColorsType:--Rod size DiameterLength0.5mm-5mm(in roll)Any length6mm-100mm1000mm,3000mm110mm-400mm1000mm Remarks:---Other sizes, colors ... very tough, even at low temperatures, and high hardness in the surface, toughness, mechanical lower shock, and abrasion ... acid or touch overmuch acid.- Poor lightfastness, poor endurance in pollution. III. PA Applications Bearings, gears, wheels, roller ...