Specification:Quantity: 2 pcsMaterial: Plastic+MetalTotal length: Approx. 33cm9004/9007 Connector size: 3.7*2.9cm(length * diameter)Decoder dimensions: 5*3cm(L*W)Socket size: 3.4*3.8cm(height*diameter)Net weight: 211gPackage includes:1 Pair of HID Decoders(2 pcs)Notice:Please be cautious that resistor will get very hot when it works， so it should be installed on the metal parts.