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The VALUE COLLECTION M-3 is a screw lock wheel mandrel designed to mount abrasive grinding or finishing wheels onto a rotary tool or die grinder. It accepts wheels with either a 1/4 inch or 3/8 inch center hole and uses a screw lock clamping mechanism to secure the wheel firmly during operation. The 1/4 inch shank fits standard rotary tool chucks. Overall length is 2 inches, and the head and washer diameter measures 3/4 inch. Maximum wheel width is 1/4 inch. At 0.1 pounds, it is a lightweight but functional holding accessory for bench or handheld grinding work. Installation and use are straightforward for machinists, metal fabricators, and maintenance technicians.
This mandrel is suited for use with small abrasive or polishing wheels in metalworking, tool and die, maintenance, and fabrication applications. It fits into standard 1/4 inch collet chucks found on rotary tools and small die grinders. Typical use cases include deburring, grinding welds, shaping metal, and surface finishing in tight or contoured areas where larger grinders cannot reach. The dual hole size compatibility — 1/4 inch or 3/8 inch — adds flexibility when working with different wheel styles from the same mandrel stock.
Designed for use with small abrasive or finishing wheels having a 1/4 inch or 3/8 inch center hole and a maximum width of 1/4 inch, mounted in rotary tools or die grinders with a 1/4 inch collet or chuck.
Always power down and unplug or de-energize the rotary tool before installing or removing the mandrel. Thread the screw lock mechanism securely to clamp the wheel before starting the tool. Inspect the abrasive wheel for cracks or damage before each use and follow the wheel manufacturer's maximum RPM rating. Wear appropriate eye and face protection when operating any grinding or abrasive accessory.
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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