Winchester 45 Auto Bullet Shell Stud Earrings with Smoky Gray Swarovski CrystalsThese earrings are made from spent bullet shells. We cut off the end, smooth the edges & add a Swarovski Crystal for a pop of color. Choose between a larger caliber or a smaller bullet casing. You also have the choices of dangle or stud earrings. (Small Calibers 9mm large Calibers 45 auto) Crystal Color: Smoky Gray Crystal Material: Swarvoski Crystal Glass Earring Type: Stud Caliber: Winchester 45 auto