Amazon.com : StarPal Dovetail Telescope Mounting Plate 10cm 21cm 30cm 40cm for Equatorial Tripod Long Version Binocular- 75° Black Plate Standard Size (21CM) : Electronics
Dovetail Mounting Plate - Aliexpress
Svbony Fully Metal 210mm Dovetail Mounting Plate for Astronomical Tele
16.5" P-Style Dovetail Saddle Plate with Four Clamps -3600GTO, 1600GTO and 1200 (DOVEPW) - Astro-Physics
Celestron Universal 14" Dovetail Plate for CGE Mounts