RARE Curtis GM Key Cutting Tool With Blanks and Book Key Cutting Tool With Aftermarket Blanks And Key Code Books. This came from a closed chevy dealer. Includes the tool, books with codes and blanks with case, ALL BLANKS ARE CURTIS FOR GM BRAND. #B44 (26), #B48 (22), #B50 (31), #B51 (9), #B77 (17), #B61 (16), B79 (26), #B67 (28), #B78 (2), #R68 (18)