Specification: Color: Clear; Material: PMMA Acrylic; Total Size: 20 x 11mm / 0.79 x 0.43 Inch (Dia*H); Style: Bead Surface; Lens Angle: 25 Degree; Packing List: 30 Pcs x LED Lens Advantage: Made of Optical acrylic material, it has high light transmittance, is not easy to break, is corrosion-resistant, durable, and can be used for a long time; With a light transmittance of up to 90%, the lens can maximize light output and achieve brighter lighting. The lens surface is a beaded surface, which can filter light spots, make color mixing more uniform, and play an anti-glare role. Application: These LED lenses have different emitting angles and can be used with 1W, 3W, and 5W lamp beads. They can focus the emitting angle of LED lamp beads into any desired angle from 5 degrees to 120 degrees, making the light more concentrated, brighter, and farther. Widely used in LED lamp cups, ceiling lights, spotlights, floodlights, spotlights, car lights, infrared monitoring equipment, etc. Instruction: Please select the desired LED lens angle. The smaller the degree, the more obvious the focusing effect. If you feel that the brightness has dropped, you need to clean the lens surface regularly to keep it dust-free. NOTE: Please cut off the power before installation. (This product does not include the LED chip and holder)