Three sets for sale here
First two sets are retained by the spring clip method
£10/pair including clips collected...
(http://i.imgur.com/JItBOkV.jpg)
(http://i.imgur.com/ZukJIh2.jpg)
(http://i.imgur.com/bitxHlR.jpg)(http://i.imgur.com/2yIoA3G.jpg)
(http://i.imgur.com/tLc6mH5.jpg)(http://i.imgur.com/tLc6mH5.jpg)