The westcott 45inch 115cm satin white umbrella can be used both as a bounce reflector with the black cover in place or as a shoot through with the cover removed maximum recommended wattage is 750 while the shaft being 8mm at the thickest point means it can be used with almost all flash heads not elinchrom and brackets umbrellas allow for a quick and easy set up and are a particularly useful addition to a lighting kit