Please note: This product is not original, only compatible with upgraded accessories Losmandy/Vixen Aluminum Alloy Dovetail Mounting Clamp, Wide/Narrow, for Telescopes Suitable for Sky-Watcher/Celestron/SKY ROVER/Askar and other astronomical telescopes, connect different heavy-duty tripods or other equipment on wide and narrow dovetail slots Specifications: Dimensions: 102x49x30mm Sky-Watcher/Vixen Primary Mirror Slot (44mm wide side) LOSMANDY Dual Slot Mode (74mm wide side) Package Included 1 x Dovetail Clamp Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!