Xking 5.5 2.1mm DC 1 Female to 2 Male Power Splitter Cable Adaptersuitable for Cctv / Surveillance Camera / Christmas Rope Lights Power Plug Type: 5.5 x 2.1mm. Plug Diameter: inner 2.1mm, 5.5mm outer. For led strip light single color 3528 5050, DC input Rope lights. Convenient and cost effective way, can be connected to a plurality of imaging devices or rope lights Compatible with all LED Light Strips and low voltage accessories. Material(external) : Plastic.