Double Convex, 38mm Diameter, 50mm Focal Length - Eisco Labs Glass Lenses

EISCO Double Convex Lens, 50mm Focal Length, 1.5" (38mm) Diameter - Spherical, Optically Worked Glass Lens - Ground Edges, Polished - Great for Physics Classrooms

RunCam Night Eagle 3 Micro FPV Night Camera 1000TVL Support OSD for FPV Drone Night Fly

Talentcell Rechargeable 12V 3000mAh Lithium ion Battery Pack for LED Strip, CCTV Camera and More, DC 12V/5V USB Dual Output External Battery Power Bank with Charger, Black