uxcell 20 Pcs 4-Pin 2.5mm Female Headphone Stereo Socket Jack Adapter Black Product Name : PCB Mount Stereo Jack;Model : PJ-2510 Type : 2.5mm Socket;Pin : 4 Pins Power : DC 30V/0.3A;Material : Metal, Plastic Size : 11 x 5 x 5mm / 0.4" x 0.2" x 0.2"(L*W*H);Color : Black Weight : 9g;Package Content : 20 x PCB Mount Stereo Jacks