WBT popular type banana plug. By tightening the cover, the center pin pushes the 4-split pole apart and ensures contact. There is overall dullness, and the red and white identification ring is missing (Tamai Jun)
Accessories: original box
Main specifications: 24-karat 3-layer plating, outer diameter 13.8 mm, length: 57.3 mm, compatible cable diameter: 7.8 mm, weight: about 23.8 g/1 piece