Chumia Chainsaw Sharpener Bits 30-Pack Silver — High-Hardness Diamond/Emery Grit for 5/32, 3/16 & 7/32 Wheels

Chumia's 30-piece high-hardness electric chainsaw sharpener bits are a mixed-size diamond-grit kit designed to quickly restore and maintain cutter edges on electric and petrol chain saw wheels. Whether you’re maintaining a workshop’s fleet of chains or sharpening a single homeowner saw, this kit supplies a range of small, medium and large grinding bits made from dense emery grain. The set includes 30 replaceable bits in three common diameters to fit 5/32", 3/16" and 7/32" sharpening wheels, so you can match the correct diameter to your saw’s wheel without improvising. The silver finish and hard-textured abrasive deliver consistent shaping and polishing across carbides, steel teeth and harder materials while being compact enough to carry in a toolbox.

How will these bits improve my chainsaw sharpening routine?

These bits speed up tooth re-profiling and finishing by offering a high-hardness abrasive that resists wear and preserves cutting geometry. Because the bits are designed for wheel-mounted electric sharpeners, you can grind multiple teeth consistently without hand-held file variability. This reduces rework and keeps cutting performance uniform across the chain.

• Diamond/emery grain for durable, even grinding
• Three diameters to match common sharpening wheels
• Easy wheel-mounted use for consistent angles
• Pack of 30 for repeated sharpening sessions

Which saws and materials are these bits suitable for?

The abrasive composition handles a wide array of materials including hardened steel teeth, carbide-tipped cutters, and non-metallic workpieces used as references during sharpening. They are intended for use with electric or small petrol chain saw sharpening wheels sized to 5/32", 3/16" and 7/32". Avoid using them on delicate, soft metals where a finer polishing compound is preferable.

• Fits 5/32", 3/16" and 7/32" grinder wheels
• Works on steel and carbide chain teeth
• Not recommended for soft-precision finishing
• Can grind non-metallic test materials like ceramic inserts

How easy is installation and replacement on the sharpener wheel?

Installation is straightforward: each bit mounts to a standard wheel shank and can be replaced in just a couple of steps without removing the chain from the saw. That saves time compared with full tooth-by-tooth manual filing and reduces downtime during a job. Keep a few spares ready so you can swap worn bits mid-project.

• Two-step replacement process — quick and tool-friendly
• No chain removal required for most wheel-mounted sharpeners
• Lightweight bits minimize wheel imbalance when installed properly
• Carry case-friendly for on-site swaps

What should I know about durability and appearance?

The bits are made from a hard emery grain matrix that resists rust and wear, delivering uniform carving and a fine polish on teeth and cutter faces. During shipping you might notice small black scuffs where the abrasive coating shifted; these cosmetic marks do not affect grinding performance. Store them dry and avoid impact to preserve abrasive integrity.

• Hard, wear-resistant emery grain construction
• Coating surface marks are cosmetic only
• Sturdy yet lightweight to reduce breakage risk
• Pack of 30 ensures long-term supply and replacements

Who is this for? This Chumia kit is aimed at professional arborists, property maintenance crews, serious DIYers and small equipment shops that need a compact, multi-size sharpening solution. If you run frequent sharpening cycles, repair multiple chains, or prefer wheel-mounted consistency over hand filing, this set supplies durable bits in common diameters to keep blades cutting true. It’s not a surgical-grade polishing tool but a practical, heavy-duty kit for routine tooth re-profiling and maintenance work.

FAQ

Q: Do these bits fit my electric chainsaw sharpener?

A: They fit common wheel sizes 5/32", 3/16" and 7/32". Check your sharpener wheel diameter before purchase.

Q: How many sharpenings will each bit perform?

A: Life varies with use and material; expect multiple chain passes per bit thanks to the high-hardness emery grit.