Narrow Dovetail Plate Hardware for Telescope Equatorial Mount 100/220/320/440mm Features: 1. Narrow dovetail plate with scale identification. 2. Suitable for installing guide scope, guide box, finder scope and other accessories on the primary mirror. 3. Suitable for installing at the bottom of the tube ring to connect narrow equatorial mounts. 3. It accepts standard mounting rings, spotting scopes, and cameras. The mounting plate is drilled with several of the most common hole types and patterns, including 3/8'', Φ6.5, M6 ect. Specifitation: Size: 100x43.5x15mm/ 220x43.5x15mm / 320x43.5x15mm / 440x43.5x15mm Weight: 88g/ 180g/ 272g/ 333g Packing list: 1pc* Mounting plate