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The VALUE COLLECTION 516140 is a cylinder-shaped mounted polishing bob made from rock hard density wool felt. It is designed for precision polishing, deburring, and surface finishing tasks on metal, wood, and composite materials. The bob mounts to a rotary tool or die grinder via a 0.25-inch shank and spins to apply consistent pressure across the work surface. At 1.5 inches in maximum diameter and 1.5 inches in head length, it covers a practical surface area for both flat and contoured finishing work. Machinists, toolmakers, and metal fabricators reach for this type of accessory when a controlled, even polish is needed on tight or recessed surfaces.
This mounted polishing bob suits bench-top rotary tools, flexible shaft machines, and die grinders commonly used in machine shops, fabrication facilities, and maintenance environments. The cylinder profile makes it well suited for polishing flat faces, bores, slots, and shoulders where consistent contact along the full head length is required. Rock hard density felt holds its shape under moderate pressure, maintaining geometry through extended use without excessive deformation.
Designed to fit any rotary tool, flexible shaft machine, or die grinder accepting a 0.25-inch shank mounted accessory.
Installation is performed by a machinist or fabricator using standard collet-style chuck tightening. Ensure the rotary tool or die grinder is fully powered off and unplugged before inserting or removing the shank. Verify the collet matches the 0.25-inch shank diameter and is tightened securely before operation. Always operate within the speed rating of the host tool and wear appropriate eye protection during use.
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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