Specific: Weight: 405 grams Material: stainless steel + alloy material. Size: 98mm * 65mm * 50mm< /p> Quality materials: the chain sharpener is suitable for 12-20 inch chainsaws, the main body of the chainsaw chain sharpener is made of aluminum alloy and stainless steel, which have strong corrosion resistance, Strong Pressure Resistance and Durability. Easy to Install: It is As Easy to Use as a Pencil Sharpener; Simply Place The Clamp On The Shank, Position The Ratchet On The Tooth, Insert The Reamer Into The Guide Sleeve And Turn The Handle. Portable: Crank Chainsaw Sharpeners Are Convenient For Outdoor Use And Have Strong Safety That Can Protect Your Hands From Injury. Precise Maintenance: Every Time You Sharpen A Tooth, All You Need To Do Is Pull The Chain. Precise sharpening can ensure that every tooth is repaired! Precise Positioning: The ratchet serves as a stop to ensure precise and repeatable positioning of the teeth. Perfect Design: To adapt to different types of chains with different holes, the chain saw sharpeners are equipped with 2 holes For fixed sharpening, one hole is fixed and the other moves back and forth, very flexible.