JJC 4" x 5.2" PVC White Balance Card Set for Achieving Perfect Color Balance in Your Photos - Including an 18% Neutral Grey Card, a White Card and a Black Card

Includes an 18% gray card, a white card and a black card, made of durable PVC material, Size of each card: 4 inch Height x 5.2 inch Width, For Perfect Color Balance, a MUST accessory for photographer, Use with any digital camera, Free detachable lanyard to keep the cards handy at all times