功能

• It represents a screw-tight terminal. The origin of the common name is uncertain, but it seems that parts of the same type already existed by the end of World War II. In addition to the screw tightening of the rose wire and arrow tip, the center of the shaft is a phi 4 mm hole into which a banana plug can be inserted, which is not lacking even today. There are no horizontal holes for inserting lines into the shaft. The T-375 series is a type (commonly known as land type) with separate knobs. The so-called sea-type, which does not have a separate knob, is the T-12.