One key blank to fit Porsche 911, 912, 914 series. Fits many 1970-1998 models. Code series is HC1-HC2080. This particular blank is steel (sticks to a magnet).
The blade length (from heel to tip) is approximately 31mm (or about 1 3/16 inches). Look at the pictures carefully and decide if this is right for you. Porsche used a few different similar-looking blanks in this period so please look carefully.