These parfocal rings are an essential tool for any telescope user. By keeping your eyepieces parfocal, they allow for quick and easy transitions between different magnifications. This is especially useful during detailed observations, where maintaining is crucial. The metal construction ensures durability, making these rings a reliable addition to your collection of telescope accessories. Features -Color:Assorted Color -Material:Aluminium alloy -Size:6.00X6.00X0.50cm/2.36X2.36X0.20in -Clear observation: the telescope eyepiece parfocal rings offer clear observation, allowing you to see objects with exceptional clarity -Precise adjustment: the parfocal ring design allows for precise adjustment, ensuring that your telescope is always focused -Multifunctional: these rings are multifunctional and can be used for various observational needs, making them a versatile accessory for your telescope -Robust construction: made from great materials, these rings are designed to withstand regular use, providing performance -Universal compatibility: these rings are compatible with a wide range of telescopes, making them suitable for both beginners and experienced astronomers Package list: 2 x parfocal ring 1 x wrench