Oregon · Rotary chainsaw sharpening stones
Oregon 28840 5/32 in. Sure Sharp Stones, Three Pack
Three matching replacement stones for an electric Sure Sharp
Price and purchase ↓
Check chain and tool fit
Check the precise sharpener and cutter specification before ordering. Oregon's 28842 is the larger 3/16-inch refill in the same family.
When to choose it
The 28840 supplies three 5/32-inch stones for the electric Sure Sharp system. Choose this refill when you already own a compatible sharpener and the chain documentation calls for this working diameter.
Specifications
- Brand
- Oregon
- Tool form
- Three matching replacement stones for an electric Sure Sharp
- Best suited for
- Refill a compatible Sure Sharp sharpener for a 5/32-inch cutter profile
- Working diameter
- 5/32 in. (4.0 mm)
- Pack quantity
- 3
- Documented system
- Oregon electric Sure Sharp
- Form
- Replacement stones
- Amazon.com reference
- B00004RA8L
Advice and other choices
Questions about this product
How many diameters come in the pack?
All three stones are 5/32 inch.
Does the pack include the electric sharpener?
This reference is for replacement stones only.
Is 5/32 inch the shank size?
The stated dimension is the stone's working diameter.


