Molded case: ABS Insulator Surface: Nickel plated voltage/current : 30VAC - 60VDC/Max. 24A Hole size: 7 * 6 mm (H) Model Number: Banana plugs Colour:Red, black, yellow, green, blue Material:Copper, ABS plastic Size:Connector 4mm Package Contents: 5 x M4X36 pure copper terminals 4mm Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.