Portable hand cranked chain grinder for sharpening chains on electric chain saws, gasoline saws, and woodworking saws. Designed for general chain grinding operations with onsite use in mind. Key features and benefits Broad compatibility: Suitable for electric chain saws, gasoline saws, and woodworking saws, making it useful across multiple tools and projects. Hand powered and portable: No electricity required; ideal for onsite sharpening and field work. Lightweight and easy to carry: Total weight about 220 g, lightweight enough for routine use without fatigue. Flexible grinding head options: Single grinding head available in 4 mm or 5 mm options (about 10 g) and a 6 mm option (about 11 g) to match different chain specs and sharpening needs. Simple operation: Compact design focuses on straightforward use for quick maintenance and consistent results. What makes it stand out Convenience of use in locations without power access. Versatile compatibility across different saw types and woodworking applications. Lightweight design with multiple grinding head options to fit common chain sizes. 23 practical use scenarios Onsite forestry or construction work: Bring the hand crank grinder to the job site to quickly sharpen a dull chain between cuts, reducing downtime. Workshop maintenance with limited power: Use in a workshop where power may be scarce or shared, allowing fast touchups between projects. Woodworking prep: Sharpen chains before long woodworking sessions to ensure clean cuts and better control. Specifications at a glance Suitable for: Electric chain saws, gasoline saws, woodworking saws; chain grinding operations. Type: Portable hand cranked chain grinder Grinding head options: 4 mm or 5 mm head (approx 10 g); 6 mm head (approx 11 g) Total weight: About 220 g