High polishing efficiency, long life and superior finish. This wheel is durable to heavy loading production of the precision PCD and PCBN tools, it have been widely used in Germany, Japan, American and other most developed machinery industry AT= @ ) ( DOT= .) Tel: 086-371-13526572721 Trade Manager: cn220244731 fiona AT kosuperhard DOT com fionasmile8 AT gmail DOT com Please contact me if you want to build business relationship each other--Your friend Fiona