Μείωση τιμής στα 30 ευρώ. και κάποιες πληροφορίες παραπάνω από την περιγραφή της Scopestuff: "Focuser Adapter for Synta Refractors This compression ring visual back replaces the visual back on Synta refractors that have 2" draw tubes, like the Orion 80 ED and 102, Vixen ED80SF, Skywatcher SW120ED and Black Diamond 120ED, 125 and 150mm refractors from Orion, Celestron, Skywatcher, TAL, Antares and others. Fits drawtubes with male threads measuring 2.2" outside dimension. Instead of thumbscrews that scratch your diagonal, this unit uses a brass compression ring to firmly grip the barrel. Lowest possible profile for the most in-focus possible. Precision CNC machined for square and centered alignment. Aluminum, black anodized, brass compression band, nylon thumbscrews. Brass thumbscrews also available".