This product is a set of ten 2 1/8 inch clear teardrop pendant prisms made of glass. The prisms are designed with a bulb shape code of PRISM and are true in their type. They have a bulb diameter of 1 cm.  It comes with an attached wire that is 1  1/2 inches long. See photos. These prisms would make a beautiful addition to any lamp or lighting fixture for a unique and decorative touch.