Telescope Finding Scope Mounting Ring Accessories for Astronomical Diameter 90mm

[Portable]The guide ring is small in size and easy to carry.It can be put in a backpack or pocket [Feature]The width of the guide ring has been widened by 14mm,resulting in more and more stable contact surfaces [Durable Material]Telescope Star Finding Ring is made of metal,sturdy structure,smooth surface and wear resistant [Anti Scratch Design]The guide ring has smooth surface,which makes it not easy to leave any mark after scratching [Easy to Install]Telescope Star Finding Adapter,adopting bold m6 screws/three locking screws with protective heads to prevent scratches during fixation