Power transmission parts None standard or standard Chain sprocket (plate wheel) ISO9001 ... Plated, Phosphating, PaintingIn Different Colour KINDS OF STANDARD or NON-STANDARD SPROCKET and PLATE WHEELTeeth from 5 to ... 200, simple, double and tripleSize:03/04/05B/06B/08B/10B/12B/16B/20B/ ... plating, blacken, paintingHardenteethCarbon steel C45 None standard or standard Chain sprocket (plate wheel)