5 1/4″ high x 3″ diameter. Steel body. Steel shackle. 1 steel dial and 1 brass dial. “PATENT ZITKO” is cast on the top dial. “BMB CMD” is embossed on the reverse of the case at 6 o’clock. Once you have set the dials to the correct combination press the button on the base of the case and then you must simultaneously push the button on the reverse of the case to the right and lift the shackle to open the lock. World Patent #AT37807B.