The Saw Blade Shield was a weapon used by all of the warrior class Skrall. It could rotate or be thrown, creating a function similar to that of a chain-saw. It also can be used as a map to find the Valley of the Maze.
The Saw Blade Shield was released at the start of 2009 with the Skrall. It was also on the lids of the 2010 BIONICLE Stars sets.