This is a Daiwa spinning reel, the ST900B Carbon Components Super Sprinter. It appears to be a lightweight model, with carbon fiber used in some parts. Application: It seems this was sold as a versatile spinning reel that could be used in a wide range of situations, both freshwater and saltwater. Era: It's classified as an old model (an "old reel") that was popular around the 1980s. As it is an old item, there are scratches and dirt, so please check the images carefully before considering a purchase. - Spool diameter: 40mm - Spool width: 12mm The reeling is smooth. The anti-reverse switch (ON/OFF) is stuck and cannot be switched. Item Code: 3