Beijing XinXing Overrunning Clutch Co. Ltd. is a high technology enterprise which make all kinds of B200,PB,MG,MI,MX,ASNU and CK series cam over-running clutches and CG and UHF series roller over-running clutches. CK cam over-running clutch is a new type clutch. It has taken out the state patent. The Brand of this freewheel is 揔CK?The clutches are exported to US, Eourope,Australia and a lots of countries.