Here is another one of Mr Andrew's rip-offs. Note this lead has 'low impedance'.
http://www.russandrews.com/product....&customer_id=PAA2320062412530FHTKPLONBZIZQFTP
http://www.russandrews.com/product....&customer_id=PAA2320062412530FHTKPLONBZIZQFTP