Fotasy FlashClamp Photography Clamp Studio with Spigot & 1/4" Screw & Rubber Protector Cover (Black) High quality multi-use studio clamp is designed for holding studio reflectors or other studio attachments. 5/8" stem; 1/4" tripod screw; 4" long; 2" tall spigot mount One (1) studio clamp with spigot Contents included: Kaavie high quality multi-use studio clip x 1 Premier Lens Cleaning cloth