This fob replacement parts where made to be a durable snap replacement option for a ford 3 button key fob. This is printed outside faces down and support material for the key ring loop. I printed this out of abs to allow vapor polishing. 0.4mm nozzle 0.2 layers 50% honeycomb infill takes about 1.5 hours for the set. The last printing had a little slop with the board battery but was taken up when you pushed the buttons positioning the rubber in the proper place.