1/4 inch to 3/8 inch adaptor: allows you to connect a variety of photo accessories, such as studio light stands, hot shoe and cold shoe adapters, ball heads, wireless flash receivers and triggers and more High precision: This precision-engineered adapter has a 1/4 inch screw and a 3/8 inch screw Easy to use: it is easy to assemble and disassemble by hand All-metal construction: the stainless steel adapter is plated to resist wear and oxidation for improved durability Small and compact: the adapter measures 2.76 inches/7 cm in length and weighs 225 g