Car Battery Terminal Stud Wire Connectors 4 Way Quick Release 2pcs Features: 4 Way Battery Terminal:There are 4 posts for wire connection in the battery terminal connectors. The purpose of the designe is for multiple cable connections. Easy to Idetify:With the signs of positive + and negative -, the quick disconnect battery terminal is easy to identify. Applicable wire diameter range: 5.2-7.4mm (AWG specification 1-4) or 16-35mm2 The main purpose of this product is to connect the power supply, stabilize the current, and protect the car battery.It contains positive pile heads, negative pile heads, L-shaped wrenches and insulation pads.The diameter of the positive and negative pile heads is 16 mm. Material: Zinc alloy