The latest development for self assembly fittings results in a termination at least as strong as the rated breaking load of the wire. The unqiue Aluminium Bronze crown rings locks the outer strands in position resulting in a perfect assembly every time. Made from 316 stainless steel. Can be removable and refitting without replacing parts or the need to cut the ends off the wire before refitting. Other thread sizes are available for wire sizes 4mm to 10mm to allow either a smaller wire to thread or a smaller thread to wire for use with guard rails, etc.