Powr-Flite® 6 Qt. Backpack Vacuum HEPA Filtered Bags - Pack of 10 Limited Quantity The bristles are silicon carbide

The bristles are silicon carbide grit impregnated

Both of these machines are great units and can also use automatic floor scrubber brushes if need be

Made of quality stainless steel and carbide swivels with a replaceable brush skirt

Just guide the burnisher as it polishes

or use the heavy-duty flo-thru brush

Powr-Flite® 6 Qt. Backpack Vacuum HEPA Filtered Bags - Pack of 10 Limited Quantity The bristles are silicon carbideThis HEPA filtered bag will trap dirt, dust and debris down to 0. 3 microns. It is a true HEPA filter that comes 10 per pack and fits into the Powr Flite HEPA backpack vacuum and Powr Flite battery backpack vacuum. This filtered bag is an important piece of the 4 stage recovery system, and should be replaced when full. This ensures that your Powr Flite backpack vacuum will continue to recover debris at its maximum efficiency. For more recovery