Amazon.com : Deda Elementi Men's Spada Quill Stem Adapter, Black, 22.2mm / 25.4mm : Art Quilling Strips : Sports & Outdoors
Origin8 1-inch Quill to Threadless Stem Adapter 22.2mm to 25.4mm – The Bikesmiths
Had to fit this adapter where was the quill stem. Tried putting spacers but because it is narrower at the base they kept moving. Is that dangerous? (other than being dangerously ugly?) :
adapter from quill stem to ahead stem | Messingschlager