Brand  Ex-Pro 

Ex-Pro Umbrella 43" (109cm) Professional Studio Diffuser - White Soft light Diffuser Photographic Soft Umbrella for use with standard flash bracket (Not included). Easy to use and set up. White Umbrella specific photographic for Soft light output. Spreads a wide range of even light. Material natural translucent white allowing approximately 50% light transmission.The umbrella's shaft or stem is approx 7mm .