Specification Brand : GOWENIC BulletPoint1 : Specifications: The guide scope ring has a width of 14mm, a large contacting range, and better stability; The inner diameter of the ring is 60mm, supporting 40‑60mm diameter astronomical telescopes BulletPoint2 : Stable Structure: The connection between the guide ring and the base is flat (non curved), which avoids shaking after the guide ring is connected to the base, greatly improving the stability of the structure BulletPoint3 : Secure Screws: This set provides a 1/4 inch screw and three 15mm length M6 screws. The locking screws come with protective heads to prevent scratches during fixation, so you can use them with confidence BulletPoint4 : Aluminum Alloy: This telescope guiding ring is made of aluminum alloy all metal material, with a thickened design to ensure high strength, impact resistance, and greatly extend its service life BulletPoint5 : Compact Design: This guide scope ring has a compact size and lightweight design, which can be carried in a backpack or pocket. It can be taken out and installed before use, suitable for various scenarios Color : As Shown1x4pcs ExternallyAssignedProductIdentifier : 3406501468962 IncludedComponents : educational plaything ItemName : 60mm Guiding Ring Without Base, Telescope Guiding Scope Ring 60mm Diameter M6 1/4in Screw Hole Finder Scope Ring for 40‑60mm Telescopes ItemPackageDimensions_Height : 3 centimeters ItemPackageDimensions_Length : 13 centimeters ItemPackageDimensions_Width : 12 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : finder-scopes Manufacturer : GOWENIC ModelName : GOWENICip5tya13g7 ModelNumber : GOWENICip5tya13g7 NumberOfLithiumMetalCells : 1 PartNumber : GOWENICip5tya13g7 ProductDescription : 1. Specifications: The guide scope ring has a width of 14mm, a large contacting range, and better stability; The inner diameter of the ring is 60mm, supporting 40‑60mm diameter astronomical telescopes 2. Stable Structure: The connection between the guide ring and the base is flat (non curved), which avoids shaking after the guide ring is connected to the base, greatly improving the stability of the structure 3. Secure Screws: This set provides a 1/4 inch screw and three 15mm length M6 screws. The locking screws come with protective heads to prevent scratches during fixation, so you can use them with confidence 4. Aluminum Alloy: This telescope guiding ring is made of aluminum alloy all metal material, with a thickened design to ensure high strength, impact resistance, and greatly extend its service life 5. Compact Design: This guide scope ring has a compact size and lightweight design, which can be carried in a backpack or pocket. It can be taken out and installed before use, suitable for various scenarios