Swiss XLR plugs, removable without tools available 3,4,5,7 core, the housing has a nickel-plated black two unique cage-type socket contacts, increasing the conductivity of the solder socket contacts for easy welding improved chuck type buckle, enhance Retention, and the make IT FAST Assembly Easier to the Run the Robust Metal with Housing in Full Compliance with Standards The relevant of Electrical, Mechanical, and Standards, and with the Plug Socket Standard ares free the Any One, the CAN FIT Bring Color Ring, the to Facilitate Signal Recognition.