installing head button stud ?

[installing head button stud ?]

Woah, thank you very much to all who respond my question, I'm sorry to get in the wrong sub forum. Now I know how the tool is look alike :D I'm gonna use : punch two holes and cutting it. I dont understand how using chisel to make the line :D 

Thank you all

[installing head button stud ?]

Hello all,

I'm newbie here and in leather world, I need help for all mastery here  how to setting/installing round head button stud ? I'm looking on internet, but I haven't found what tools to make a hole for button stud ? because the hole for this button is different. It's not just hole but like there is a line hole or in the others I saw there is another small hole above the line.

Like this o---O

 

Thank you guys !