Sterling Silver 3D Cannon Movable Charm Approximately 1/2" x 15/16" Approximately 1.7 grams Includes 6mm split ring already attached This is a sterling silver 3D canon charm that has tiny movable wheels; it measures about 1/2" x 15/16" and weighs about 1.7 grams. This charm makes a good addition for a military themed charm bracelet. It comes with a split ring already attached making it more secure for a charm bracelet or necklace.