K&F CONCEPT NANO-X Series PL filter, 43mm, featuring True Color & CPL functionality, and an ultra-low reflection design. - Brand: K&F CONCEPT - Model Name: NANO-X Series - Size: 43mm - Features: True Color & CPL - Anti-Reflection: Ultra-Low Reflection K&F CONCEPT 43mm True Color & Ultra-Low Reflection CPL Filter, eliminates yellow cast, ultra-low reflection of 0.1%, contrast and reflection adjustment, high transmittance, circular polarizing filter, double-sided 28-layer coating, optical glass, ideal for landscape photography (Nano-Xcel) This product was purchased last August. I haven't had much opportunity to use it, so I'm putting it up for sale. While there is some minor wear and tear, there are no scratches and the product is in good condition. Thank you for looking.