Vinyl beading

I am looking for this beading for my windshield on my 86 sportcraft boat. It is a hard top with fixed windshield. The measurements are as follows. In the picture in my attachment the part pointing straight up is a hair under 3/4 in. The blade pointing horizontal to the right is 1/2 in. And is black in color. I need around 30 ft. The 2nd picture is the windshield frame with beading installed.
Thanks for your help in this matter.