Shredder

The Shredder is an obstacle, used as the second obstacle in the Wipeout Zone of Season 7, replacing both Blockbuster and Throw-tisserie from the previous season.

It is two rotating cones that contestants must cross to get to the other side. Compared to Throw-tisserie, there are only four planks in each cone to walk on and a large gap in the middle.

Only eight contestants cleared this obstacle:

Yoshi Sudarso (S7E1)
Nick Santo (twice in S7E4 and S7E13)
Josh Clark (S7E4)
Derek Stusynski (S7E6)
Kasey Stewart (S7E7)
Andy Tibbitts (S7E11)
Tyler Heathman (S7E12)
Logan Ouellette (S7E13)

Coincidentally, four of them later won their respective episodes.

In the TBS revival, it was replaced by Vertigo.