The Mouse Hole is a laser-cutting device capable of cutting through almost any material. It was created by S.H.I.E.L.D. agent Leo Fitz, although it was not mass-produced and instead kept for use by high-ranking agents.
"I designed it a year ago and submitted it for testing, but it never reached distribution." "Top agents always hog the good stuff."
Around that same time, Fitz used a Mouse Hole to affect the escape of his team from the Bus when Victoria Hand sent a kill-squad aboard the plane, falsely believing that Coulson and his team were HYDRA sleeper agents.