THEY SENT ME THE CORRECT LINES. I just did not see the threads. I got my brake lines and started installing them but noticed that my brake line from the truck is a male connector and the extended brake line is also a male connector. I figure either I got the wrong lines or maybe a connector was supposed to be in the package? I have an 88 GMC Jimmy fullsize with the 10 bolts front and rear. The part number of the ones I recieved is 7220. The rear fit great with no problems. The front actually fit the caliper like they are supposed to but as I said I have male ends and that does not work. Thanks.