This listing is for a single tip of a super-hard spatula, with the shape and size as shown in the title. This listing is for the left-hand needle type. Only the tip is included, so a handle like a pin vise is required, as shown in the image, but it excels in cost performance and ease of maintenance. (Pin vises, grinders, scales, etc. are not included, but the cap is included.) There are mainly three shapes: bullet type, needle type, and an intermediate type (images of the three types are used). The image shows the intermediate type attached to a pin vise, which is the standard shape. The length is 30mm before polishing, and there are individual differences in the finished length and the length of the polished surface. The polished surface is about half the length, and the actual mirror-finished part is about 10mm. The tip is perfectly polished for about 10mm. There's no point if the polishing rod is scratched. Since I was not satisfied with commercial products when I was doing craft work, I was always polishing and maintaining them. The M size is roughly cut to 2.35mm to match the shaft diameter of a rotary tool, so it can be attached to a rotary tool. Made of the highest quality super-hard material in Japan, it is difficult to scratch, so curved surface polishing is difficult. Also, many people cannot maintain super-hard spatulas because cutting and polishing them is difficult. Even with high-quality super-hard material, the spatula is not maintenance-free. It is said that the investment material in the voids of the casting defects mainly damages the spatula. In the days of steel, it was like a barber's razor, constantly being sharpened. As shown in this image, you can re-polish relatively quickly by rotating the buff vertically and the rotary tool horizontally. (The grinder in this image also includes a rotary tool.) Although there are voids in super-hard materials, scratches are relatively easy to remove, just like with precious metals. Because cutting and polishing super-hard spatulas is difficult, they are mainly round in shape because they are made by rotating them, but the current polishing finish is also done in this way. (Diamond paste is required for polishing.) Many mass-produced jewelry items are polished by cutting and polishing with a rotary tool or buff, but polishing with a spatula has the characteristics of not wearing down and tightening the polished surface. It is also used for sesame seeds that cannot be removed even by cutting. In the past, platinum was polished with a spatula. Of course, re-polishing is also possible at our workshop. Includes shipping via Mercari's Nekopos service. http://bijodam.com Hosted by Workshop BijoDam Graduated from the Japan Jewelry Craft Engraving and Carving Department, CGL DC, Yutaka Ota