These are copper crimps.\r\nThese copper crimp lugs are used to attach wires whilst acting like a washer to allow easy attachment.\r\nTo attach these to wires you place the wire in the end and crush it with a pair of pliers.\r\nThese are sold in boxes of fifty, so the price you pay is not for a single unit.\r\nThese lugs are conductor 10.\r\nThese allow for an easy setup and a quick installation.\r\nThese copper crimp lugs are included in our one year guarantee, as are all of our products on our website electricals247.co.uk.