The Sieveking Auto Key Guide lists over 2,600 automotive and motorcycle keyways, covering makes from Acura to Zundapp, and listing fourteen popular key manufacturer numbers. Every listing has clear illustration of the keyway. This allows the locksmith to compare the "key-in-hand" to the listed number. If the key blank number is not known, the "Maker" section of The Sieveking Auto Key Guide will allow the locksmith to search through all the listed keyways for a particular auto maker "by the illustration of the keyway". When the correct keyway is found, you will also find all the manufacturers numbers for that keyway. The keyways are also identified as pin or wafer, and the number of pins or wafers given. Whether the illustrated key is 6 wafer or 8 wafer, 5 pin or 10 wafer, you'll know at a glance.