A set of three 4x2 mm navette rings, that can intersect between each other forming sets of, one, two or three rings together, accordind what you want to use that day.They can be sold in set or each one separately.You can also use different stones colors, combining them so the choices are really different.Each one has 5, 6 and 7 navette with long prongs so they can be cut once the stones are set in place.