Feature: 1. EASY TO USE: It is simple and easy to use. Simply put the bracket into the dovetail slot of the astronomical telescope and tighten it to get 3 optical accessory slots. 2. DEPENDABLE FIXTURE: Each saddle is equipped with two screws to provide the best fixing effect and ensure the mounted optical accessories are stable and firm. 3. WIDE APPLICATION: You can mount 3 optical accessories or other optical devices to the telescope through it, providing more flexibility in installation and adjustment. 4. THREE SLOTS: This is equivalent to adding 3 slots to the astronomical telescope's optics, providing users with more accessory mounting space and options. 5. ALL METAL MATERIAL: The mount is made of all metal, lightweight and abrasion resistant, with a delicate and smooth appearance, providing good durability and texture. Specification: Item Type: Astronomical Telescope Fixed Slots Rack Material: Aluminum Alloy Color: Black Slot Specification: 25mm / 0.98in Wide At The Top Of The Slot, 34mm / 1.34in Wide At The Bottom Of The Slot, 10mm / 0.39in Depth Of The Slot. Base Specification: 21mm / 0.83in Wide At The Top, 31mm / 1.22in Wide At The Bottom.. Package List: 1 x Astronomical Telescope Fixed Slots Rack