The diameter is around 1.7mm...not many drill bits are that size. Plus, the roll pin compresses to fit and keeps the key fit snug when inserted, preventing it from wobbling back and forth.
Numerous people have successful used this exact one (mine is in the mail). You can program yourself if you have 2 stock keys.
NEW GT STYLE FLIP KEY REMOTE FOR 2011-14 FORD MUSTANG CLICKER CHIP KEYLESS ENTRY | eBay
I get it’s a vert, but you’re being rediculous saying the mileage is high for the price. Find me a sub 20k mile 2011/12 for $30k anywhere in the country right now.
I’m just concerned about the resale when that time comes. I am having an issue with that currently trying to sell my car with an accident on the report.