... , 45×45mm, 50×50mm, 60×60mm, 70×70mm, 80×80mm.The corner bead isa new building material, and specially designed to protect ... the outside corner. It can make the corner looks smoother and speed up the construction period. The corner bead is made of ... excellent mechanics function; It is easy to use the corner bead without ruler, at the same time, it saves labor and reduces project ...