Price listed is for two sliders. These are approximately 16mm by 11mm cast sliders plated in antique gold. There is a hole drilled from top to bottom on both sides. The bead hole measures about 1.33mm. They have a flat surface on the top with prongs. You can add a flat back stone. The flat surface between the prongs measures about 6mm by 10mm. A 6/10 oval or octagon should fit or possilbly a 5/10 navette.