Ma name is Marek. Im living on Iceland. I boght hummer h2 2004. I replaced old master cylinder and brake line for a new but i dont know how to connect two brake line to masrter cylinder. Old one was little bit diferent.
I bought this masrter cylinder :
I need two screws to conect. Old pomp was little bit diferent. My mechanic told mke a new one has little bit diferent fottings. Like...rounded or something.

https://photos.app.goo.gl/JBpc1m2QjePjbGjy9

 

Anytime I have replaced a master cylinder, the old lines should screw right in. Did you buy the wrong master cylinder?

 

Ewverything is ok now. Thanks for help.