This is a set of 5 red chisels for engraving (carving). This is a set of chisels essential for the basics of engraving. You can generally practice basic patterns with this set. From left to right: Hairline chisel, blade width 0.9mm (for extra-fine lines) Hairline chisel, blade width 1.5mm (for main lines) Round chisel, blade width 1.4mm Single-cut chisel, blade width 1.8mm Single-cut chisel, blade width 2.4mm Commercially available red chisels have been formed and polished. They have been hardened and tempered. All 5 chisels have a slight R (curve), making them suitable for curved engraving. You can engrave straight lines with chisels for curves, but it is difficult to engrave curves beautifully with straight chisels that do not have an R. Please refer to the sample in image 6 for the engraving marks of each chisel. You can use them as they are, but the cutting edge will become dull and difficult to engrave with use. We hope that those with knowledge and skills in chisel forming and polishing will consider purchasing. ★ If you purchase multiple chisels on sale, the shipping cost will be reduced. Please specify the chisel number, etc., in the comment section before purchasing. We will relist them in a dedicated frame. (Example: Want to purchase two of No. 1 and No. 2) (Example: Want to purchase 5-piece set and two of No. 1)