One Layer of bias sisal sewed with two layers of cotton cloth, provides it good cutting and polishing properties, mainly used for pre-polishing metal ware.
There are two types of OS:
A: With dip treatment in special resin: harder buff, better cutting power, extremely long service life, self-cooling during operation.
B:Without dip treatment in special resin: softer buff, saving polishing compounds, self-cooling during operation.