Weewooday Chainsaw Sharpener Bits 50-Pack 3/16in (4.8mm) Pink with 1/8in Shank & Storage Case

These are 50 pink 3/16" (4.8 mm) burr grinding stones by Weewooday designed to sharpen and polish chainsaw chains and small metal parts, supplied with a compact plastic storage box.

Compact, replaceable grinding burrs let you refresh cutting edges and remove burrs without needing to disassemble the chain or remove parts. Each bit features a 4.8 mm diameter grinding head and a 2.8 mm shank, making them compatible with many rotary sharpeners, die grinders, and dedicated chainsaw-sharpening tools. The pack of 50 plus a storage box gives you multiple replacements for extended use and workshop convenience.

How will these burrs fit my chainsaw sharpener?

The Weewooday burrs have a 1/8" (≈2.8 mm) shank and a 3/16" (≈4.8 mm) head, so they fit most handheld rotary tools and many chainsaw-specific sharpeners that accept small-diameter bits. Check your tool’s collet or chuck diameter to confirm compatibility before use.

• Shank diameter: approx. 1/8" (2.8 mm) for common collets
• Grinding head: approx. 3/16" (4.8 mm) for typical chain tooth profiles
• Total length: approx. 47 mm for secure seating in many rotary tools
• Included plastic case for organized storage and transport

What metalwork tasks can I use these grinding bits for?

Although marketed for chainsaw sharpening, these grinding stones are suitable for a range of light metal finishing tasks. They excel at removing burrs, smoothing weld seams, and refining small internal surfaces in machinery or cast parts.

• Deburring welded seams and casting flash
• Smoothing bearing seats and mold cavities
• Light polishing of heat-treated steel components
• Detail work in deep holes or confined areas

How do I operate them safely and effectively?

Install the burr into an appropriate rotary tool and run at recommended speeds for abrasive grinding stones to maintain shape and avoid overheating. The stones dissipate heat reasonably well, but short passes and moderate pressure preserve the bit and the workpiece.

• Wear eye, respiratory, and hand protection while grinding
• Use light, steady pressure—let the stone do the work
• Work in short intervals to prevent overheating
• Store unused bits in the supplied plastic box away from children

How durable are these grinding stones and what sizes are provided?

Made from abrasive grinding stone material, these burrs offer good hardness for repeated light-to-moderate polishing and shaping tasks. The pack provides quantity rather than a variety of shapes, so you get many replacements of the same size for ongoing use.

• Grinding head diameter: approx. 3/16" / 4.8 mm
• Grinding head length: approx. 7/8" / 23 mm
• Shank diameter: approx. 1/8" / 2.8 mm; total length: approx. 47 mm
• Pack contents: 50 identical burrs and 1 plastic storage box

Who is this for: This 50-piece Weewooday set is aimed at landscapers, arborists, homeowners, small engine mechanics, and metal hobbyists who need a low-cost supply of interchangeable grinding stones. It's especially useful if you perform frequent chain touch-ups, routine burr removal, or detail metal finishing and prefer a ready stock of the same size for consistent results. Keep the bits away from children and follow standard safety precautions when grinding.