Fits perfectly. Arrived very quicly
From order to delivery at home in EU in 90 days. Already fired up the dispute because seller did not extend time. Fortunately the shipment came in so I can cancel the dispute. The shim corresponds to measures, so 28.6 on the outside and 25.4 on the inside. Will use on vintage bike with a 1" fork to use a standard 28.6 stem. Really recommend product if you doing this kind of conversion.