This chainsaw sharpening tool quickly restores a dull chain without requiring removal from the saw. The blade end fits inside the tool, locks into position, and is pressed against a tree or log while the saw operates normally. Its built-in sharpening stone works as the chain runs, helping restore a sharp edge in just a few seconds per tooth. It fits chainsaw bars measuring 14, 16, 18, or 20 inches and accommodates mounting holes spaced approximately 0.7 to 1.3 inches apart.

Two pins secure the tool to the bar, with one adjustable pin allowing it to match different hole spacing. Its compact, lightweight construction makes it convenient to carry during outdoor cutting jobs without adding significant weight. Quick setup after adjusting the pin spacing makes it a practical accessory for keeping chainsaw chains cutting efficiently.

• Product type: Chainsaw chain sharpener attachment
• Compatibility: 14", 16", 18", and 20" chainsaw bars
• Design: Two-pin mount with adjustable spacing
• Use case: On-the-spot chain sharpening
• Best for: Regular chainsaw users and outdoor cutting tasks