The Aven Tools 44228 No. 25 Blade has a curved shape and sharp tip that is ideal for general purpose heavy-pressure cutting, whittling, carving and trimming. The blade is precision-crafted of the highest quality carbon steel with hard sharp points and honed cutting edges. It is designed to handle a variety of tasks where accuracy and cutting ease are essential. The 44228 will fit knife handles K-2 and K-5.