uxcell 2PCS 30V Copper 4mm Male to 4mm Female Banana Jack Probes Adapter Country of Manufacture: CHINA; Brand: DMiotech Material: Copper, Plastic; Net Weight: 9g Package Content: 2pcs x Banana Connector; Main Color: Red, Black, Silver Tone Design: 4mm Male to 4mm Female Banana Jack; Voltage: 30V Total Size: 52 x 7mm/ 2 x 0.28inch(L*D)