End Cap 3.5" - 2.7" x24 tpi Female Thread (fits Astro-Physics Telescope Accessories)
SOLOMARK 1.25" Deluxe Zoom Telescope Eyepiece 8-24mm with T-Thread, Continuous Zooming Variable, FMC Broadband HD Green Film Telescope Accessories
Amazon.com: JUIYU Telescope Accessory Set 50mm Reticle Alloy in Different Magnification Astronomical Telescope Accessories Telescope Camera (Color : 9x50 Black Bracket) : Electronics