I just measured the quill stem and it's 1". I wonder why the specs would list it as a 1-1/8 Tange Seiki. So this means the correct size adopter to get then is the 1" to 1-1/8" stem? I'd rather get the adopter and the stem separate so I still have the option to switch it with a longer or shorter stem. I just need to know exactly which size to buy.