This adapter can be used as a 1.25" nosepiece for any camera that has C-mount (1") threads. The adapter has male C-threads on the camera side, and a male 1.25" barrel on the telescope side. The 1.25" barrel is 1.15" long. There is a 0.1" lip at the base of the C-threads, making the total length 1.25". The barrel is threaded for standard 1.25" filters. Black anodized aluminum, internally threaded for stray light baffling.