Street Guardian SGGCCPL - CPL FOR SG9665GC v1 or v2 (NOT v3) CIRCULAR POLARIZING LENS Reduce Glare & Reflections Reduce DashBoard Reflections from below and Sun Glare on your Street Guardian SG9665GC CPL glass comes pre-adjusted for the correct polarization. (no adjustment needed) Buyers don't need to adjust anything, - just attach to your SG9665GC V1 or V2 CPL filter shell is made of a strong and flexible plastic with a heatproof rating up to 80C / 176F. (SGGCCPL) Custom Made CPL Filter for SG9665GC (Night Friendly! Leave on 24/7) 3D Printed in The Netherlands, Assembled in France, German CPL glass consists of 4 layers: protective glass + Circular Polarized glass + protective glass + UV glass.