10-38mm Flat Convex Aspherical PMMA Lens for Zoom LED Flashlight Bicycle Head Lamp Replacement (Clearx42mm)

Precision PMMA Flat Convex Device: This aspherical condenser lens focuses and collimates the light efficiently, ideal for zoom LED flashlights and bicycle headlights. MULTIPLE SIZE OPTIONS Available in diameters 10mm, 18mm, 20mm, 21.8mm, 23mm, 25mm, 28mm, 29mm, 32mm, 34mm and 38mm, suitable for various flashlight and lamp models. High Light Transmittance Made of transparent PMMA material (acrylic) and provides excellent optical clarity and durability for long-term use. EASY INSTALLATION One-piece device, compatible with most zoom flashlight and bicycle headlight lens holders; Just replace the old lens to improve beam performance. Wide Application Suitable for DIY flashlight upgrades, bicycle lamp repairs, lantern modifications and other optical focusing projects that require flat convex aspherical lens.