Product purpose: Replacement adapter that converts a 1.25 inch eyepiece insertion to a standard M42 (T2) threaded interface for use with telescope T adapters and related accessories. Key benefits Enables seamless use of standard 1.25 inch eyepieces with M42/T2 threaded systems. Replaces old or damaged adapters to restore reliable, secure connections. Lightweight and durable thanks to aluminum alloy construction. Precisely machined for a snug fit and reliable alignment with minimal play. Corrosion resistant and designed for long service life. Specifications and features Material: aluminum alloy Interface 1: 1.25 inch eyepiece insertion Interface 2: M42 (T2) threaded connection Purpose: fits standard 1.25 inch eyepieces and enables connection to T2/M42 telescope accessories and adapters Use scenarios Replacement for a worn or damaged 1.25 inch to M42/T2 adapter in a visual observing setup, restoring compatibility with existing eyepieces and Tadapters. Astrophotography workflow: attach a 1.25 inch eyepiece to a telescope's M42/T2 threaded system and connect a Tring for camera attachment, enabling imaging with a DSLR or mirrorless camera. Equipment upgrade or maintenance: upgrade older gear by replacing the adapter to maintain compatibility with modern M42/T2 accessories and keep your 1.25 inch eyepieces in use.