Needless to say this baby is one of the last checkmarks in our ninja warrior rating progression system. We offer white---->black bands based on ninja skills and progressions just like karate and this one is definitely in the blackbelt/band level. Stupid hard, especially when you add a pull up and traverse to another vertical limit. We have both of the vertical limits and they are great "keep your tail humble" tools. I highly recommend both vertical limits as great tools for pull-up progressions. 90 degree limit first before you tackle this bad boy.