PowerSharp® is an easy to use, precision sharpening system that gives chain saw users the power to sharpen their own chain in a matter of seconds with a simple attachment. Fast — From dull to sharp in as little as 3 seconds. Easy — Only three steps to faster, easier cutting. Portable — Bar-mount sharpener is lightweight, durable, and highly visible. Precise — Exact alignment between cutter and honing surface for perfect angles and knife-sharp edges. Tough — PowerSharp® chain is as durable and hard-working as other Oregon® 3/8″ pitch, low-profile chain.