16 inches/41 centimeters exterior diameter Reflector Beauty Dish is for Bowens Mount Studio Strobe Flash Light, for example Neewer Vision 4 Vision 5 VC-400HS VC-600HS VC-300HH VC-400HH VC-500HH VC-300HHLR VC-400HHLR VE-200 VE-300 VL-300 PLUS Studio Flash, etc. Made of Aluminum: Sturdy and durable Black Outside and Silver Inside: Alters the shape and intensity of the light output from your flash heads. Directs all the strobe light output onto the set. Sculpts facial features and creates beautiful shadows and catches lights A white diffuser sock ringed with strong elastic fit is coming with the beauty dish, adding more softness to the light Note: You will need a Bowen Mount adapter if your strobe doesn't have a Bowen Mount