Easy to assemble/disassemble, compact and easy to store Westcott umbrellas feature 8mm shafts fitted with 7mm tips. Westcott umbrellas feature 8mm shafts fitted with a 7mm tapered tip to help fit the shaft into receptacle openings. Aazon.co: Fabtech FTS291 Ca Alignent Kit Silver Reflective Umbrellas Standard Umbrella - Soft Silver Bounce (32") • Compact Collapsible Umbrella - Soft Silver Bounce (43") • Standard Umbrella - Soft... Westcott 43 Whte Umbrella, Collapsble | Whte umbrella, Umbrella Photo Umbrella Measurements Guide The umbrella size is determined using the arc size. Strong Steel Framework Constructed with a steel shaft and ribs, these umbrellas are reliable when used in both the studio and out on location. Shooting with speedlites? There are a variety of mounting brackets available with adjustable and tiltable options for precise positioning. Easy to use and easy to carry wherever you need them Reflects more light Telescopic Shaft Neewer ® 43" Diameter Photography Studio Collapsible Reflective Sof Vs Softbox