Easier for CCTV microphone or camera installation, save time and more securerSimply loosen screws, insert the wire, and twist the screws shut using a screwdriverNo electrical tape, no splicing, and no crimping requiredCan handle 20-24 AWG gauge wirePlease use ferrules if you have issues with thin wire pulling out.Material Plastic housingConnector A:RCA MaleConnector B : 2 x AV Audio Video Screw TerminalApplication Plug "+" and"-" features connector with polarityItem dimensions: 1.57 in x 0.55 in x 0.51inWhat You Get: 4 x AV Audio Video Plug Adapter