|“I can't get over how small you are!”
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The Shredder is a large pair of spinning blades used to shred Aperture Science equipment, and potentially the player. It is first seen in The Escape, where the blades destroy turrets the systems deems to be defective. Wheatley tries to use a pair to kill Chell in The Part Where He Kills You after she maneuvers past his turrets. The player must move to the left or the right to avoid them. It also appears in several Co-op course 4 chambers as a hazard.