Material: BrassA 7 pins Lock on both sides. Equal to 2 x 7 pins lock. Lock cylinder has openings cut into the pin chambers that allow you to see it work.You can see clearly that how the pins work when a key is inserted. You actually can see the pins moving up and down as the key slides into and out of the lock.Size:6cm X 3cm(2.4"X1.2")Package contents:1 * cutaway padlock & 2 keys