1. Name: 4PCS Deluxe European-type Wood Chisel Set 2. Descriptions: Made of High Carbon Steel, High Visibility Comfort Shaped Handles, Steel Caps For Use With Mallet, Hardened & Tempered Steel Blades, Includes Protective Blades Guards 3. Size: 6mm 13mm 19mm 25mm 4. Cutting Instructions: Gomer Wood Chisels are designed to make finish or paring cuts on wood surfaces. Hand pressure, when applied evenly, is often sufficient. Deep cuts can be achieved by striking chisel end with a hammer. 5. Re-Sharpening Instructions: To keep cutting edge sharp, place front bevel flat on an oil stone and move back and forth keeping the bevel flat on the stone. Turn the blade over. Hold flat against the stone, move back and forth to remove any feather edge.