Versatile power tool accessory, fits 1/2" arbor buffing/polishing, grinding & sanding wheels & discs * Long shaft accommodates wheels from 1/8" to 1-1/8", left-hand threading keeps wheel secure in arbor * 3/4" nut with washer, cap diameter 1-1/8", length overall 2-1/4" * 1/4" shank fits power drills, die grinders and other power tools; hardened steel with zinc finish * Rated 25,000 RPM, net weight 2.6 oz; excellent quality - made in Taiwan