Product Material: Plastic Size: 15 * 5.5 * 4cm Color: Black Caliber: 38-43 mm Flat circle of the M circle: 34-38.5 mm (for 32-50 mm telescope) S-circle curve circle: 31-34 mm (applies to astronomy and telescopes with small openings) Two circles superimposed: 26-28mm (suitable for microscope and astronomy) Quantity: 1 piece Package Contents: 1 * Universal Universal Telescope Bracket 1. To set up Easily align the eyepiece with your phone camera. It only takes less than 1 minute to connect the phone to the optical instrument and get clear pictures. It is an absolute time saver and an image catcher. 2. For a wide range of eyepieces The universal phone adapter bracket is suitable for eyepieces with an outer diameter of caliber: 38-43 mm and can be mounted on most binoculars, monoculars, telescopes and spotting scopes, microscopes. 3. Compatible with most phones Universal adapter bracket for mobile phones with a wide range of widths from. Suitable for more than smartphone models Often used in iPhone, Samsung, LG, Sony, etc. 4. Unique design The phone holder is designed to be rotatable and movable to avoid pressing the volume button and power button during use. It also made it easier to align your phone with the adapter, and you can focus as quickly as possible. 5. Compact and high quality material Full size 15 * 5.5 * 4cm. Its light and compact, easy to transport and store. This phone adapter is made of soft but durable rubber and EVA. The aim was to hold your phone in place and protect it from scratches. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.