Application:This Speaker Panel Mount Connector is mainly used for docking with four-core card ohms male head. It is suitable for mixers, amplifiers, audio equipment, etc. It is the first choice for audio projects such as karaoke, concerts and public broadcasting. Specification:Product Name : XLR Male Jack Panel MountColor : BlackUse Way : Wiring Contact Pin Quantity : 3 PinHole Diameter : 2.5mm / 0.098"Mounting Diameter : 19.5mm/ 0.76"Total Size : 31.7mm x 25.5mm x 29mm (L x W x H) Package Included:4pcs x XLR Male Jack Panel Mount Description:1.provides optimum overall RF protection and electromagnetic shielding2.This adapter is primarily used with professional audio and video equipment. Also frequently used with studio equipment.3.The 3-pin female has a unique cage contact that enhances conductivity and reduces wear when female to the male4.The female contacts have a soldered bar to prevent soldered from entering the mating area5.Larger soldered cup contacts make soldered easier