POLINOX™ PNER Unitized Discs - Threaded Hub

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Depressed Center (Type 27) PNER discs with 5/8-11 threaded hub.

EDP Diameter x Width (Inches) Thread Size Abrasive Grit Density Spec. Recom. RPM Max. RPM   48490 4-1/2 x 1/2 5/8-11 Silicon Carbide fine soft 2SF 6,000 10,000 48492 4-1/2 x 1/2 5/8-11 Silicon Carbide fine medium-soft 3SF 6,000 10,000 48494 4-1/2 x 1/2 5/8-11 Silicon Carbide fine medium-hard 6SF 6,000 10,000 48500 5 x 1/2 5/8-11 Silicon Carbide fine soft 2SF 5,400 10,000 48502 5 x 1/2 5/8-11 Silicon Carbide fine medium-soft 3SF 5,400 10,000 48504 5 x 1/2 5/8-11 Silicon Carbide fine medium-hard 6SF 5,400 10,000