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D80mm Glued Green Film Achromatic Objective Lens for DIY Astronomical Telescopes(D80F900 Film)

D40 Glued Achromatic Objective Lens for Refractive Astronomical Telescopes - 40mm Diameter,...

10.5mm-50mm Edged Acrylic Flat-convex Lens for Flashlight LED Focusing Torch, Magnifying Glass Optical Accessories,1pcs(20mm)

1PC Round Fresnel Lens PMMA Optical Condenser 50-100mm for LED Light Projector VR(D70mm-FL30mm)

Round Fresnel Lens 50mm PMMA Threaded Condenser for LED Light Projector DIY VR Optics(D42mm-FL60mm)

D150F750 Reflector Astronomical Telescope Spherical Primary Mirror with 35mm Secondary Mirror,1pcs(Primary D150F750)

15-50mm PMMA Flat Convex Acrylic Lens for Bicycle Lamp Replacement with Zoom(1PCx33mm)

Short-Axis Secondary Mirror for DIY Reflecting Astronomical Telescope - 20mm to 70mm Options(65mm)

D106 106mm Refracting Astronomical Telescope Objective Lens - Multi-layer Coated for Enhanced...

Flat Convex PMMA Acrylic Lens 15-50mm for Zoom Flashlight Bicycle Lamp Replacement (1PCx31.6mm)

20-66mm Acrylic Flat Convex Lens for LED Focus Flashlight Accessories(1PCx50mm)

Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optics,1pcs(D70mmxFL50mm)

1PC Round Fresnel Lens PMMA Optical Condenser 50-100mm for LED Light Projector VR(D55mm-FL40mm)

Round PMMA Fresnel Lens 20-70mm Threaded Condenser for LED Light Projector VR Optics,1pcs(D20mmxFL50mm)

D70 70mm Double-Separation Single-Sided Blue Film Telescope Objective Lens with Retaining Ring(D70F360)

Acrylic Flat Convex Lens with 20-66mm Rim for Flashlight LED Focus Torch...

10.5-50mm Acrylic Flat-convex Lens for Flashlight LED Focusing Torch Accessory 1pc(24.8mm)

Refractive Dual Separate Blue Film Objective Lens - 50mm Caliber Focal Length 360mm/600mm(D50F600)

Acrylic Flat Convex Lens 10-38mm for Flashlight Bike Lamp Optics(1pcx27.8mm)

D80mm Glued Green Film Achromatic Objective Lens for DIY Astronomical Telescopes(D82.5F316 Film)

10.5mm-50mm Edged Acrylic Flat-convex Lens for Flashlight LED Focusing Torch, Magnifying Glass Optical Accessories,1pcs(12.5mm)

Flat Acrylic Convex Lens 23mm and 38mm for Flashlight, Headlight, Light Reflector...

D30mm Glued Objective Lens for DIY Astronomical Telescopes - Achromatic with Optional...

Optical Flat Convex Acrylic Lens Outer Diameter 10.4-66mm for Flashlight LED Focusing, 1PC(OD55.8 ID44.6)

Multi-Purpose Astronomical Telescope Lens Set for DIY Projects - Compatible with Xingtrang...

5pcs 10-38mm Clear PMMA Flat Convex Acrylic Lens Set for LED Flashlight...

D150F750 Parabolic Newton Reflector Primary Mirror - 150mm Aperture, 750mm Focal Length,...

10mm-38mm PMMA Flat Convex Aspheric Lens for Zoom LED Flashlight, Bike Headlamp,...

PMMA Flat Convex Acrylic Lens for Bicycle Lamp with Zoom(1PCx29mm)

Short-Axis Secondary Mirror for DIY Reflecting Astronomical Telescope - 20mm to 70mm Options(85mm)