Value Collection 516139 Cylinder Polishing Bob Wool Felt

Product Description

The VALUE COLLECTION 516139 is a cylinder-shaped mounted polishing bob designed for surface finishing, deburring, and polishing applications in metalworking and fabrication environments. Constructed from hard-density wool felt, this bob delivers consistent, controlled polishing action on ferrous and non-ferrous metals, plastics, and other materials. The 1/4-inch shank mounts directly into standard die grinders, rotary tools, and flexible shaft machines. With a maximum diameter of 1-1/2 inches and a head length of 1-1/2 inches, it is suited for detailed work in bores, cavities, and contoured surfaces where flat or disc abrasives cannot reach. Machinists, tool and die makers, and metal finishing technicians are the primary users of this type of accessory.

This mounted bob is appropriate for bench-top and handheld rotary tool setups in machine shops, maintenance facilities, and fabrication shops. It is well suited for fine polishing passes on inside diameters, slots, and recessed surfaces where precise geometry control is needed. The hard felt density makes it effective when used with polishing compounds to bring surfaces to a high luster or to prepare surfaces for inspection. It is sold individually and is a direct drop-in for standard 1/4-inch collet tooling setups.

Key Features

• Cylinder shape provides even contact across the full head length for consistent polishing in bores and channels
• Hard-density wool felt construction supports use with polishing compounds without excessive deformation under load
• 1/4-inch shank diameter fits standard die grinders, Dremel-style rotary tools, and flexible shaft handpieces
• 1-1/2-inch maximum diameter and 1-1/2-inch head length suit a wide range of detailed finishing tasks
• 2-inch shank length provides clearance for reaching recessed workpiece features
• Lightweight at 0.077 pounds, reducing operator fatigue during extended finishing operations

Compatibility

Designed for use with any rotary tool or die grinder accepting a 1/4-inch shank collet. Verify collet size and maximum RPM rating of the host tool before mounting.

Installation Notes

Install the shank fully into the collet of the rotary tool or die grinder and tighten the collet securely before operation. Always confirm the tool is powered off and unplugged or the air supply is disconnected before changing accessories. Wear appropriate eye protection and gloves when operating rotary finishing tools. Follow the tool manufacturer's maximum RPM rating for mounted accessories and do not exceed that rating with this bob.