Strips and cleans surfaces in one operation. Reversible hex shaft inhibits disc slippage for utmost control Outfitted with 3 clusters of wire stands for heat minimization Not intended for use above 4000 RPM. The 4 in. Quick-Strip Wire Brush from Avanti Pro is outfitted with rigid bristles to scrape and clean a variety of surfaces with your power drill. Three clusters of wire strands spin up to 4000 RPM to effortlessly strip away unwanted material and blemishes from fiberglass, masonry and metal. The nonslip reversible hex shaft keeps the instrument firmly attached to your power tool to use at varying speeds with minimal heat buildup and smooth operation. Strips and cleans surfaces in one operation. Reversible hex shaft inhibits disc slippage for utmost control. Outfitted with 3 clusters of wire stands for heat minimization. Not intended for use above 4000 RPM.