I want to be super super clear about what type of stem I need. Could someone describe the difference between quill and threadless? I am confused what type I need or what is the difference. I just want to make sure I don't buy the wrong type. I definitely need the 25.4 size right? The guy at the store wrote down
1" threaded ----> 1 1/8" threadless adapter
I don't know what that means...