M48x0.75 Locking Mechanism: Features a M48x0.75 female thread rotation lock ring with precise 2 inch male thread compatibility; eliminating slippage and maintaining optical alignment during extended telescope use
Industrial-Grade Sealing Standard: Manufactured using precision CNC machining to achieve thread tolerance of ±0.01mm; The components are engineered to comply with the M42×0.75 thread standard, which specifies 42mm thread Diameter and 0.75mm thread pitch
Anodized Aluminum Material: All metal construction, which significantly extends service life of product; Lightweight aluminum construction effectively minimizes load on telescope accessories, making it well-suited for long time astronomical observation
With this SCT Adapter; you can use your refractor diagonal with all telescopes having a standard SCT thread
This adapter has a standard SCT female thread "2inch; 24 TPI" on one side to connect to the male SCT thread on the rear of your telescope