For rapid preparation of wooden painted surfaces. 4-way 2.5 inch scraper head can be resharpened. Two comfort grip handles for ease of use. Compatible with Amtech G4518 2.5inch (6.5cm)Wood Scraper Blade Set. Instruction: To replace the cutting blade, simply unscrew and remove the #3PH screw. Then re-tighten the screw securely before reusing the scraper. Note: Sharp blade. Handle with care when using or changing blades. Store in a safe place and always keep away from children. Do not sell to children under the age of 18 years old.