You will get the set of two spark plug wires that are pictured for your Unit 650 500 or Pre Unit 500 650, where you require 10" plug wire. These are hand made and each connection is tested for strength and meter tested at .000 ohms = 0 resistance / This wire is Red Translucent covered and pure copper core, for your classic motorcycle, they measure 10 3/8" end to end. We combine shipping costs on multiple wins, so check out our ebay store. To get an order with combined shipping you must request and invoice before you pay. Contact us with any questions / /