Quill stem measures 1 inch exactly. I'm guessing the fork is a 1 1/8" threaded. What headset do I need? Also does anyone make 1" Threadless adapters? : r/xbiking
Threaded Headset Service | Park Tool
Genetic Quill Stem Adaptor
What are Headsets and why so many sizes?
Oxford Quill Stem Raiser
LGEGE Bike Quill Stem Adapter, Adjustable Bicycle Front Fork Extension Tube 25.4 mm to 28.6mm for 1-1/8" Threadless Size Converter : Amazon.co.uk: Sports & Outdoors
Velo Orange Positive Rise Quill Stem - Freshtripe
New Innicycle 1" Threaded to 1-1/8" Threadless Conversion Headset - BIKEPACKING.com
3TTT Quill Stem - B Page and Son Cycles
The Retrogrouch: Threadless and Quill Stems
Condor Strada Quill Stem – Condor Cycles
Kalloy Alloy Road Quill Stem
Touring Bike Quill Stem | Trade Bike Parts | Mackadams UK
Orion - Quill stem, S-2F, 25.4mm, L175mm, 80mm, S.B. Black – tokyobike London