Designed for use with telescope eyepieces, these parfocal rings are crafted from great metal, ensuring longevity and reliability. By maintaining a consistent focus, they enhance the overall performance of your telescope. Simply attach the rings to your eyepieces, and enjoy the convenience of not having to adjust focus each time you change eyepieces, making your stargazing sessions more efficient and enjoyable. Features -Color:Assorted Color -Material:Aluminium alloy -Size:6.00X6.00X0.50cm/2.36X2.36X0.20in -Enhanced clarity: the telescope eyepiece parfocal rings offer enhanced clarity, providing a sharp and detailed view of objects -Accurate adjustment: with the parfocal ring design, you can achieve precise adjustments, ensuring that your telescope is always in great focus -Multipurpose use: these rings are designed to cater to different observational needs, making them a versatile addition to your telescope accessories - performance: constructed from robust materials, these rings are built to last, ensuring longterm performance and reliability -Universal fit: these rings are designed to fit a wide range of telescopes, making them suitable for both hobbyists and professional astronomers Package list: 2 x parfocal ring 1 x wrench