Specification Brand : Fabater BulletPoint1 : Secure Connection: Equipped with 2 fixed screws to support connecting 2 inch telescope eyepieces and astrophotography filters, preventing damage to telescope accessories. BulletPoint2 : Functional Design: Provides extra focusing distance to increase length extension. Sometimes necessary for certain eyepiece or telescope camera combinations for focusing. BulletPoint3 : Universal Compatibility: Features front end with M48x0.75mm thread for use with 2 inch telescope eyepieces and astrophotography filters, ensuring a secure fit. BulletPoint4 : Sturdy Construction: Anodized black finish prevents unnecessary reflections. Made of solid aluminum alloy material for strength, durability, and wear resistance. BulletPoint5 : Extended Focusing Needed: Often requires more focusing distance when observing short distances on the ground with a telescope or using field flatteners, correctors, or reducer lenses. ItemName : Telescope Extension Tube Reduce Reflections Telescope Eyepiece Extension Copper M48 X 0.75mm Thread Stable Connection for Astrophotography Filter (60mm) ItemPackageDimensions_Height : 6 centimeters ItemPackageDimensions_Length : 15 centimeters ItemPackageDimensions_Width : 8 centimeters ItemTypeKeyword : telescope-eyepieces ItemTypeName : Extension Tubes Manufacturer : Fabater ModelName : Fabateriyz5gsga8d-13 ModelNumber : Fabateriyz5gsga8d-13 NumberOfItems : 1 PartNumber : Fabateriyz5gsga8d-13 ProductDescription : 1. Functional Design: Provides extra focusing distance to increase length extension. Sometimes necessary for certain eyepiece or telescope camera combinations for focusing. 2. Extended Focusing Needed: Often requires more focusing distance when observing short distances on the ground with a telescope or using field flatteners, correctors, or reducer lenses. 3. Secure Connection: Equipped with 2 fixed screws to support connecting 2 inch telescope eyepieces and astrophotography filters, preventing damage to telescope accessories. 4. Universal Compatibility: Features front end with M48x0.75mm thread for use with 2 inch telescope eyepieces and astrophotography filters, ensuring a secure fit. 5. Sturdy Construction: Anodized black finish prevents unnecessary reflections. Made of solid aluminum alloy material for strength, durability, and wear resistance.