Features: Good compatibility: 4mm standard size well connection with most auditory equipment, test instrument applicable to a wide ranging. Stable Signal Transmission: high conductivity and low resistance itself, coupled with the gold-plated process, it can effectively reduce the loss in signal transmission process Improve the stability of auditory signal transmission and ensure sound. Reliabled electrical connection, reduce contaction resistance, protect the transmission of sound, improve test accuracy. High safety: good insulation performances and stable connection reduces the risk of electric shock, providing a safe environment for use. Specifications: Item: 4mm Speaker Y-Connector Fork Shape Banana Plug Size:about 35x10x10mm/1.37x0.39x0.39in Component: Mixed Metal Package Includes: 2PCS 4mm Banana Plug note: There might be a bit color distortions due to different computer resolution There might be size errors due to different computer resolution