Selected Material: Made of durable and safe PP material, the phone photo adapter is hard, rust-proof, reliable and not easily damaged. Expandable Adapter: The lightweight design of the phone telescope adapter makes it easy to carry. You can fold it and take it anywhere without damaging items. Soft Lining: The telescope phone adapter has a soft rubber inner ring that increases friction and protects the telescope or phone lens from damage. Protect Your Telescope: When using a telescope adapter, you can safely position and capture the perfect shot. It's the perfect phone viewfinder and telescope adapter. Strong Compatibility: The mobile phone holder is suitable for almost all mobile phones on the market. Compatible with more telescopes, such as binoculars, spotting scopes, microscopes, etc.