This lighting is the best.. easy to wire into your 12v system.. easy to cut to length.... easy to join..  (Joiners sold separately)
and Looks stunning, 8mm wide and 2mm high. 3M double side tape for easy installation,. 
 
There is connectors on both ends of the 5m lengths allowing you to cut and make two lengths. 
If you require more lengths out of your 5meters you can buy clip on connectors separtely.