this product is manufactured through power metallurgical die-casting and its
hardness reaches at 60-62HRC with special carburizing for the sprocket end. The
plane run-out is ensured to≤0.001mm throught a special polishing process for its
surface while a circular grinding process for its concentric inside.
we can offer you all kinds of ball race steering, motorcycle parts,and OEM is
welcome. so waiting for  your inquiry
 certification : QS-9000 : 1998
                    ISO9001 : 2000
1)  National standard quality guarantee long lasting working life time.
2)  competitive price
3)  positive customer feedback from oversea and domestic market
4)  sample purpose order is acceped
5) packing:A:blister card packing +carton
                    B:single plastic bag+ single box packing