If you are looking for a master keying chart you are in the right place

This Ilco Key in Knob Cylinder features the Schlage SC1

1987 Ford Crown Victoria

this General Motors 4 Button Remote Keyless Entry 4B21 (KOBLEAR1XT)-by Ilco is a top choice for professional key cutters and locksmiths

1997-Daewoo-Nubira

Hyundai Elantra GT 4 Button Prox 4B20–By Ilco 1994-Chevrolet-Corvette If you are looking forAs a top choice for locksmiths and key cutters, the Hyundai Elantra GT 4 Button Prox 4B20 key blank boasts high quality material and precise cutting for reliable duplication. Perfect for professional use or those in need of precise key duplication, this blank guarantees ease and accuracy.