What a blast! I handcrafted these cufflinks using 40 caliber bullets. I carefully cut and filed down the body of the casing to reduce them to perfect cufflinks faces. The size of them make them both subtle yet the brass finish make them brilliant. Don't worry, the rounds have been spent so they pose no threat to the wearer. Please note the manufacturer of the bullet will vary but it will be a 40 caliber bullet. These are a perfect gift for the fashion forward and gun lovers. The cufflinks will be mailed in a cufflink box.