Application:This Speaker Panel Mount Connector is mainly used for docking with four-core card ohms male head. It is suitable for mixers, amplifiers, equipment, etc. It is the first choice for projects such as karaoke, concerts and public broadcasting. Specification:Product Name : XLR Male Jack Panel MountColor : Silver Tone Use Way : Wiring Contact Pin Quantity : 3 PinHole Diameter : 3.5mm / 0.13"Mounting Diameter : 18.7mm/ 0.73"Total Size : 31.5mm x 25.5mm x 26mm (L x W x H) Package Included:5pcs x XLR Male Jack Panel Mount Description:1.Full metal housing provides optimum overall protection and electromagnetic shielding2.Dual grounded design for excellent contact integrity between the base and cable connectors3.The 3-pin female has a unique cage contact that enhances conductivity and reduces wear when to the male4.The female contacts have a soldered bar to prevent soldered from entering the mating area5.Larger soldered cup contacts make soldered easier6.Optional pin 1 is easily connected to the base ground