Take precautions when using. These blades are very sharp. Replace the safety cap when not in use to avoid accidental cuts. 5 1/2 inches in length (including blade). Very easily unscrew the tip to replace blades. AGAIN be very careful. Be sure that the tip is screwed tightly after replacing the blade and recheck before using. Additional blades will come in a convenient small plastic box.
The precision knives are perfect for trimming and carving metal clay.