What is ambry alloy bit shake handshandle installs?

Metal polishing base has been implemented, address: AngYi fishing cross the village ( Wood group for land) Polishing machine number 800, now the relevant matters: - ->
ambry main composition is tungsten carbide alloy bit shake handshandle installs, cobalt, etc. , in 90 degrees of above commonly, higher hardness in batch processing and difficult hard machining occasions more comfortable.

we don't need to use at ambry installation shake handshandle alloy bit.