high power led collimator lens 1,high quality with good price 2,optical grade PMMA 3,high transmittance 4,easy install High power led collimator lens1,LED lens,high quality with good price 2,optical grade PMMA 3,high transmittance 4,easy installation 1. DxH(mm): 28.8x16.52. Degree: 20° 30° 40° 50° 60°3. Material:Optical PMMA