Stems | Quill stems ( Goose necks )
Theres are two basic types of stems, one for the threadless systems which are usually 1-1/8 size. The second is the quill stems or goosenecks for the threaded systems usually 1 " but sometimes 1-1/8. Bicycle quill stems usually go into the fork steerer tube. You can also find stem raisers to raise your handlebars and converters from threaded to threadless. Stems can also help you with your bicycle fitting and comfort.