Gunk Engine Degreaser is tops in the engine cleaner business. Whether it's professional mechanics or weekend warriors, you're sure to find a can in their workshop. Now we offer a look-alike product,  the Gunk Engine De-greaser Diversion Safe, that is a very smart idea. The days of the big, bulky traditional safe are over. This diversion safe has a secret area that is perfect for hiding your valuables. Internal compartment dimensions: 1 3/4" x 4"