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The VALUE COLLECTION 516177 is a ball-shaped mounted polishing bob designed for surface finishing, deburring, and polishing operations on metal, wood, and similar materials. Constructed from medium-density wool felt, it delivers consistent contact pressure and a smooth, controlled finish. The bob measures 1 inch in maximum diameter with a 1 inch head length, and mounts on a 1/4 inch shank for compatibility with standard rotary tools, die grinders, and drill presses. At 0.035 pounds, it is lightweight and easy to handle during extended finishing work. Machinists, tool-and-die technicians, and fabrication professionals keep this bob on hand for detail polishing in tight contours and curved surfaces.
This mounted polishing bob is suited for bench work and hand-held rotary applications in machine shops, fabrication facilities, and maintenance environments. It performs well on contoured surfaces, cavities, and radius edges where flat abrasive media cannot reach. The ball shape allows even pressure distribution across curved workpieces. The 2 inch shank length provides adequate reach into recesses and deep profiles. Typical applications include polishing mold cavities, deburring cast parts, and final-stage finishing before coating or inspection.
Designed for use with rotary tools, die grinders, and drill presses accepting a 1/4 inch shank. Suitable as a standard mounted polishing bob for general-purpose surface finishing applications.
Installation is performed by inserting the 1/4 inch shank into the collet or chuck of the rotary tool and tightening securely before operation. Ensure the tool is powered off and unplugged before mounting or removing the bob. Operate within the RPM rating of the tool and inspect the bob for wear or fraying before each use. Worn or damaged bobs should be replaced before continuing work.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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