2 Pack 2m/6.56ft extension cord for GreenClick landscape lighting spotlights( B07RTHF8YK, B075T636RM) and led path lights(B0763RV7PC, B083SBZ3NY). It is recommended that the connected extension cable should not exceed 39ft, or the long cable will weaken the current and reduce the brightness of the light. The DC extension wiring with 3.5 x 1.35mm interface, it can be connected between the adapter and the first lamp or lengthen between lamp.. (Note that the DC head cannot be soaked in water)