Product Name: C-1.25" C Mount Extension Ring Product Code:TA3121 Description: Made of black anodized aluminum, Internally grooved to reduce stray light reflection for maximum contrast Threaded for Standard 1.25" Eyepiece Filters . Allows you use an astro filter for better imaging experience. Camera/Camcorder Fitting: C-Mount Lens Fitting: 1.25" telescope lens Type: Lens Adapters Model: 1.25" telescope lens Color: Black How to use: Attach the camera to the C of this adapter. Then slide the 1.25" barrel into your 1.25" telescope focuser Package include 1pc X C-1.25" C Mount Extension Ring |