This is a listing for one engraving chisel with the shape and size of the title. 105° 75° hair engraving, no image available, image is close to 90°. Please refer to the illustration. Image 2 of the bottom surface shows a single-cut and 60° hair engraving, overall image 3 shows 60° hair engraving, image 4 of the hand grip installation shows a single-cut, and image 5 of the engraver machine installation shows 60° hair engraving and single-cut used. Please be aware that 60° and 75° hair engraving are prone to chipping with a machine. The last photo shows the machine specifications from a side angle, but if stock is available, it can be changed to machine specifications, so please inquire. Despite repeated requests, development took a long time. Because the cutting edge of cemented carbide is extremely sharp, even with Japanese-style engraving chisels, the cutting edge will easily chip if it is simply sharpened on a surface grinder. Western-style engraving uses a prying motion and has a sharp cutting edge, so it is no match. However, this was resolved by slightly curving the lower blade during sharpening. Therefore, we utilized the Japanese-style engraving sharpening technique and repeated sharpening practice and test engraving to commercialize the product. Furthermore, it is buffed with diamond paste (single-cut also has a mirror finish on the sides). The engraving angle may be slightly higher than that of general Western-style engraving chisels. The advantage of the lower blade curve is that the force applied to the cutting edge is distributed by the curve, making it less likely to chip and easier to bend. Also, the engraving marks are clean because they are engraved like a spatula. Made from approximately 2.4mm round stock, the length is 50mm before sharpening, and may be slightly shorter after sharpening. The size of the cutting edge has a strong taper value and also has different opposing angles, so it cannot be measured accurately, and the tolerance is ±0.1mm. M is around 1mm, L is around 1.5mm, and there are also intermediate sizes. Except for the 60-degree hair engraving, the diagonal line is about 1.5 times the opposing dimension at 90°. The trapezoid is the dimension of the lower blade tip. It can be attached to a chuck-type grip like a pin vise or a GRS set screw handle, but the handle's installation compatibility is not guaranteed. With this wooden grip, inserting 1 cm will make the total length about 11-12 cm. All photos are reused images, so please understand that there may be slight differences. Grips and scales are for installation reference and are not included. (Caps are included) Initial defects will be handled, but chipping and damage after use cannot be exchanged. The width and angle of the cutting edge can also be adjusted during re-sharpening. http://bijodam.com/ Kobo BijoDam Yutaka Ota