Are you looking for a professional, yet dovetail slot? Are you in search of a sturdy, trustworthy that can do multiple jobs at once? , ! Our professional dovetail slot must meet you needs. It is one of the for you. Features - Color: Black. - Size: 4.2 x 3.9 cm/1.7 x 1.5 x 0.8 inch. - Material: Aluminum alloy. - edge: 23.4mm/0.9 inch. - Middle edge: 34mm/1.3 inch. - Groove edge: 9mm/0.35 inch. - Lower edge: 34mm/1.3 inch. - Can be fixed: -M5 screw. - Solid all metal construction ultra-thin design, ultra-light weight. - Dovetail base is with . - Great for adding a second or third aiming device to your telescope. - Dovetail base fits or bracket can securely attach an aiming device to any telescope. - Fits any diameter telescope tube optical tubes, includes two attachment screws. - Made of high strength Aluminum with Anodizing Aluminium Process. - Aluminum dovetail base is designed to accept (with bracket) . for custom installation of a on telescopes not already equipped with a compatible base. - Bases feature a large thumbscrew lock to secure bracket in place . Package list: 1 x dovetail slot