If you have a Blinking Light Win you know how hard it can be to get your cartridges back out of your Nintendo. This tool is for extracting Code Master style carts from your NES without damaging them. You'll need to print two of the extractors, and one each of the fulcrum and fulcrum cap. The cap fights tight and you may not need glue to hold it in place.
NOTE: THIS IS FOR CODEMASTERS CARTS ONLY. For standard NES carts see the original thing http://www.thingiverse.com/thing:1805837
These were printed in PLA.