44mm Optical Glass Lens Collimator Plano-Convex for Led Projector & Led Lamp

(Material: glass (borosilicate). Edge thickness: 3mm. Edge width: 2mm. Light transmission rate of up to 98%. Focal Length: 20mm (for reference only). We stand behind our products. 　 wrong item). France Rate(item arrived) 10.5% 28.6% 43.8% 10.1% 6.7% 0.3%.

eBay