Welcome to our store! 1.25 inch diameter T-adapter, suitable for all standard 1.25 inch telescopes and microscopes. T2 T-ring adapter allows you to connect Sony E-mount cameras to 1.25-inch telescopes and microscopes. The extension tube is suitable for all standard 1.25 inch telescopes and microscopes. To use, screw the extension tube into the adapter ring, then install the extension tube into the camera body, and finally connect it to the telescope/microscope. Please note that the ring adapter does not support autofocus and it has no electrical connection, requiring manual aperture and focusing adjustments. Item Type: 1.25 inch Extension Tube Kit Material: Alloy Color: Black Interface: 1.25 inch, T2, M42*0.75mm, E Fitment Telescope: For T2 Mount Telescope Mounting Camera: For Sony E Mount Camera Weight: Approx. 188g Package List: - 1 x Extension Tube - 1 x Adapter Ring 100% Satisfaction: Our customers are our top priority. If you find any product problems after receiving the item, such as damage and incorrect quantity of goods, please contact the seller immediately. We do our best to provide you with satisfactory after-sales service.