This product is made from high-quality moso bamboo, carefully selected and harvested from the fertile soil of the Hakone West Foothills in Shizuoka. Total Length: Approximately 17cm Blade Length: Approximately 10cm Blade Width: Approximately 8mm (tip) to approximately 18mm (base) Handle Width: Approximately 3cm Blade: Double-edged As it is a double-edged type, it can be used on both sides and by both right and left-handed users. It is mainly suitable for opening envelopes or when you want to cut a small piece of paper (about one sheet) in half. Please note that this is a handmade item, so there may be some unevenness. The natural texture and flavor of the bamboo are preserved, and no finishing paint or oil removal has been applied. Photo 6 shows the included blade sharpening set. Please use it to adjust the sharpness. As shown in Photo 7, wrap sandpaper around a bamboo stick and sharpen the blade according to the angle. If the blade is too thin, apply sandpaper perpendicularly to the edge and lightly sharpen it.