Power transmission parts None standard or standard Chain sprocket (plate wheel) ISO9001 aproved High quality Power ... Finished, Zinc Plated, Phosphating, PaintingIn Different Colour KINDS OF STANDARD or NON-STANDARD SPROCKET and PLATE WHEELTeeth from 5 to 200, simple, ... /200/240Surface: zinc plating, blacken, paintingHardenteethCarbon steel C45 None standard or standard Chain sprocket (plate wheel)