Fast EdgeⓇ features a sharp nose with no mud bump, and tapered legs to significantly reduce mud usage and drastically speed up installation time. The nose also acts as a hinge to accommodate framing variances. With no holes, Fast EdgeⓇ cuts down installation and finishing time significantly, and the patented mud locks keep the corner held firmly in place without the need of staples or adhesives.
https://www.trim-tex.com/products/overview/corner-beads/mud-set-beads/fast-edge