UNPLUGGED STUDIO Diffuser for 70inch Umbrella Applicable umbrella size:70inch(180cm) Hole size for electronic flashes:8inch (20cm) # Umbrella is not included. It is 70inch size umbrella diffuser. It is a diffuser used by covering the irradiation surface of the umbrella. Easy to install # Umbrella is not included. Diameter of opening 8 inch. You can use the flash that enters this size.