uxcell 10pcs 4.0mmx1.7mm Male to 5.5mmx2.5mm Female Jack DC Power Connector Product Name : DC Power Adapter;Connector Type : 4.0 x 1.7mm Male Plugto 5.5mm x 2.5mm Female Plug Material : Metal, Plastic;Overall Size : 4 x 1.2cm / 1.6" x 0.5" (L*D) Main Color : Black, Silver Tone , Yellow Total Weight : 45g Package Content : 10 x DC Power Adapter