Origin8 1-inch Quill to Threadless Stem Adapter 22.2mm to 25.4mm – The Bikesmiths
Delta Threadless To Quill Stem Adapter - Wheel & Sprocket | One of America's Best Bike Shops
Velo Orange Threadless Stem Adaptor
Bike Bicycle Handlebar Fork Threadless Stem Adapter Riser Rise Up Extender Head Up Adaptor Cycling Accessories - Walmart.com
Nitto MTC-024 quill stem adapter – Retrogression
Amazon.com : LERWAY Bike Stem Riser Extender MTB Handlebar Stem Adapter with Hex Key for 1-1/8" 28.6mm Fork Aluminum Black : Bike Stems And Parts : Sports & Outdoors