[Filter Ready Design] Equipped with .6x0.6mm internal threads, this eyepiece allows effortless attachment of different astronomical filters like moon filters and nebula filters. enhance your celestial viewing experience with improved contrast and clarity when observing lunar surfaces, star clusters, and deep-sky objects. the threaded design maintains filter stability during observations.
[Crystal ​] Featuring premium colorless optical glass with exceptional light transmission properties, this eyepiece delivers stunningly clear and ​​ astronomical images. the advanced optical system eliminates ghosting and distortions, providing true-to-life views of celestial bodies. enjoy breathtaking details of the moon's craters and planetary surfaces with this high-performance eyepiece.
[Durable Construction] Crafted from lightweight yet sturdy aluminum alloy, this eyepiece combines durability with professional-grade performance. the rustproof metal housing protects the precision optics while maintaining excellent heat dissipation. with its fine craftsmanship and robust design, this eyepiece will be your reliable observing companion for years to come.

Spec:
Item Type: 1.25 Inch SR4mm Eyepiece
Material: Aluminum Alloy, Optical Glass
Interface Size: 31.5mm / 1.2in
Eyepiece Structure: Ramsden Eyepiece
Magnification ​​ Length: 4mm / 0.2in

Package List:
1 x Storage Box
1 x 1.25 Inch SR4mm Eyepiece

How To Use:
Install and use