The blade has been ground on two angles, so it will smoothly cut through wood without unnecessarily damage your plants. Due to the unique shape of the hollow ground blade the sap flows away from the blade and the blades will not come apart. The V-shape of the spring ensures that the cutting load is distributed evenly over the length of the spring which guarantees a smooth closing.
The shears are constructed from very few components, so that there is hardly any maintenance required. It is recommended to clean the blades after use. After cleaning it is recommended to oil the shears and store moisture free with the cutting blades closed. If you notice that the shears are not cutting as well as originally, you can grind them using the Okatsune whetstone (Okatsune 412)