PFERD POLINOX PNK Non-woven abrasive convolute wheel used when other tools reach their finishing limits or cannot achieve the required result. The low aggressive characteristics of the polyamide fibers and the positive effect of the abrasive non-woven materials create brilliant smooth finished surfaces. Recommendation for use Due to the wrapped structure, foamed ring wheels must be used only in the indicated direction. Running in the wrong rotational direction will destroy the wheel and create an increased accident risk. Ergonomically optimized products and power tools that contribute to greater safety and working comfort, and thus to health protection. Comfortable working with reduced vibration and lower noise. Specification: Diameter x width (inches): 8x1; Arbor hole (inches): 3; Abrasive: silicon carbide; Grit: Fine; Density: medium-soft (MW) - light blue; Spec.: 7SF; Recom. RPM: 1900; Max. RPM: 3850.