1、LARGE CAPACITY: Dry wall flat finishing box adopts large capacity, can hold more materials, can scrape a larger area. 120° adjustable design, better cope with a variety of room types. 2、DOUBLE SPRING: Dry wall flat finishing box also adopts double spring design for more uniform removal of putty. To smooth the uneven wall at once. 3、EXTENDABLE ROD HANDLE: Wall flat finishing box is equipped with a handle that can be adjusted from 980mm to 1800mm. You can adjust height at any time according to actual needs to work better. Easily scrape heights and ceilings without a ladder. 4、ROLLER: Flat finishing box can be fine tuned to handle difficult angles, and it can be connected to a variety of corner positions to fit the wall perfectly. The roller design reduces labor and smooth wall easily with a single push. 5、ALUMINUM: The whole finishing box is made of aluminum alloy, which is strong and durable. Smooth surface, not easy to rust, fits perfectly to the wall and easy to clean. Perfect for home, decoration, engineering, booths, etc.