Product Contents: Main Body X 1 Blades X 6 EVA Gaskets X 10 Nuts X 4 Wrenches X 2 Various screws X 6 Product Material: Made from authentic North American black walnut wood, paired with selected brass fittings. Cutting Accuracy: We strive to improve our manufacturing process to minimize cutting errors as much as possible. However, it is important to note that no cutting tool can guarantee zero error. Due to the thickness of the blades and the tension of the leather, this tool may have an error of approximately ±0.4mm. Maximum Leather Thickness: This leather tool is suitable for cutting leather up to 5mm in thickness. It is not recommended for leather that exceeds 5mm or extremely hard materials like bridle leather. This limitation is not specific to the tool itself; it is difficult to cut such materials with any tool. Does the Product Come with Blades? Yes, the product comes with 6 blades included. We will also provide a link for purchasing additional blades, if needed. Please be aware that the blades are extremely sharp and should be kept away from children. It is advisable to regularly replace the blades during use, as dull blades can make cutting difficult and result in uneven cuts. Additionally, using dull blades can be more dangerous as they require more force and are less controllable. Suitable for Left-Handed Users? No, this product is specifically designed for right-handed users. Regarding Product Quality: As the product is made from natural North American black walnut wood, it possesses the inherent characteristics of natural wood, such as scars, unique patterns, and insect marks. Additionally, the product is handcrafted, and minor flaws may be present.