The 4 Point Ninja Star has a 5" wide landing area for both left and right hands. One of your hands will land on a convex surface and the other hand on a concave surface. The convex surface is the side that separates the ninjas from the want-to-be ninjas.
We machine these out of 1" thick High-Density Polyethylene (HDPE).
Measures 16" wide x 16" tall x 1" thick.