Ford Mustang alternator wire boot

I made this boot to replace the little rubber boots that cover the wire connections on the back of the alternator to my 1965 Ford Mustang.  I am sure this would fit many other Ford products from the mid-1960s up to the mid-1980s, an d probably has applications for many other auto manufacturers as well.  The inside diameter is 17 mm and the outside diameter is 20 mm, and the hole for the wire is 3mm.