Blue Hard 270 by Aouunn Place of Manufacture: Miki City, Hyogo Prefecture, one of the leading hardware town in Japan. Sharpness: Use for vertical and horizontal grinding, depending on the purpose and wood grain. Recommended Use: Ideal for interiors, woodworking, and bamboo work. Recommended Thickness: Can be cut comfortably with a diameter of up to 3.5 inches (9 cm). Compatibility: Compatible with all blue hard series replacement blades. Product Feature 1: Horizontal and vertical blade for smooth workmanship. Product Feature 2: Suitable for people from ordinary to craftsmen. Product Feature 3:1 impact hardening per blade for greater durability