They are specialized key blanks cut to represent every possible "space" (position) and "depth" (cut level) for Yale Y1 locks

1998-Mazda-B Series

heavy duty latch and strike plate markers

and American made cars and trucks that utililize wafer or similar style locks

Lock Chassis: Heavy gauge dichromated steel

Rim Cylinder Schlage Keyways C123 US26D (Satin Chrome) 1972-AMC-Ambassador They are specialized key blanksThe Schlage C123 Keyway 1 1 8" Rim Cylinder in US26D, from GMS is crafted from solid brass and fits the Schlage C123 keys. It is specially engineered to meet Schlage's specific pinning and spacing standards. This cylinder does not come with keys. This cylinder features a 6 pin core. Does not have the side pin like the OEM Schlage cylinders. Tailpiece converts between horizontal & vertical positions Cylinders use Schlage pins and the same spacing depth