POLINOX® unitized wheels are made of multiple heavily compressed, non-woven layers, which are bonded together by a special grain/resin system. This particular bond results in non-woven products that create very good surface finishes and have high stock removal rate and long service life. These properties come into play especially when deburring, blending, finishing, and polishing soft metals, alloyed and high-alloy steels, as well as titanium alloys. This version for straight grinders, flexible shafts and bench grinders is designed for working on smaller surfaces. Hard version with very high stock removal rate, good edge strength, and long service life for tough deburring and polishing applications. An adapter is included with the 6" x 1 diameter grinding wheels, which allows the center hole diameter to be reduced from 1" to 20 mm.