Spring — makiwara spring with stiffness regulator. Flexibility is controlled by movement of the spring adjustment, if higher the spring to the upper end - the lower rigidity. Makiwara contains metal parts and the wooden base, making reliability. Excluded break striker. In Spring series, provided the metal bump and the spring. Metal bump is designed to contain a shock board during reverse movement. Makiwara can be very soft and tough depending on the height spring. Mounted on a wall (2 screws), or fasteners screed arbitrary surface.