1: It can easily remove the excess sealant from the joint by using its smooth rear side, which can be removed only with small contact pressure; 2: The tool is very useful in the expansion joints, first use its straight edge smoothing, and then use its matching concave radius for deeper removal 3: Its angle is suitable for clean and narrow position 4: When the sealant is still fresh, the tool is very useful, or you can cover some fresh sealant on the dirt to help clear, can be used in any position