SHIMANO Sora, Cassetta Unisex Adulto, Silver, Taglia Unica : Amazon.it: Sport e tempo libero
Shimano Tiagra CS-HG50 9 Speed Cassette
Shimano Sora 9-speed Cassette - Cascade Bikes | Tigard, OR
Shimano Sora CS-HG50-9, 9 speed cassette - 12-25T - IMBY Bicycle Service & Repair
Cassetta Shimano HG50 9 Velocità Sora - Mantel
In case anyone is wondering, on a Sora 9-speed derailleur, you can fit a 42 tooth sprocket and a 11-42 cassette with no issues. Shown on a 2016 Trek Crossrip Elite. : r/gravelcycling