Item 1: 5.5 mm - 2.1 mm male connector with lead wires $1.50 Item 2: 5.5 mm - 2.1 mm female connector with lead wires $1.50 Item 3: 9 volt battery snap on connector with lead wires $1.50 Item 4: 9 volt battery connector with 5.5 mm - 2.1 mm male connector $2.50 Item 5: 9 volt battery connector with 5.5 mm - 2.1 mm female connector $2.50 Item 6: 2-way splitter $3.00 Item 7: 8-way splitter $4.00 Item 8: 8-way splitter $5.00 Length of lead wires: 12 centimeter, approximately 5 inch Polarity of lead wires: Red wire positive Cylindrical connector: OD 5.5 mm, IO 2.1 mm, Center positiveLength of splitter: 35 centimeter, approximately 14 inch For custom made splitter or extension cord, please contact us for quote.