Feature:1. 4.25in Dovetail Plate: Dovetail plate allows you to connect multiple accessories including telescope rings, telescopes, and cameras. It can also be used for attaching telescopes with tripod adapters.2. Dovetail Plate Function: The dovetail plate provides a platform for attaching telescope optical devices to an equatorial mount, and for securely attaching an oscilloscope to an EQ mount.3. Easy to Dismantle: The adapter is made completely oxidized and precisely manufactured from full metal alloy, and can be easily connected and dismantled without tools.4. 1/4in Thread: The adapter offers a threaded post for attaching instruments, such as standard photographic tripods equipped with a 1/4in socket.5. Excellent Accessory: The dovetail plate is an excellent accessory for EQ mounts and DSLR or SLR cameras to take photos of the Star Road.Specification:Item Type: Dovetail PlateMaterial: Aluminum alloySize: Length 108mm/4.25in, width of lower edge 43.4mm/1.7in, width of front groove 15.6mm/0.61in;Characteristic: 2 1/4in screw holes in the middle, 1 M62 stepped screw hole on both sides.Package List:1 xDovetail Plate2 x Screw2 x Turnbuckle