The Caliber Collection supports the buy back program of illegal guns from different cities.  These amazing bangles come in three different finishes and in four different cities. Finish -- Coal Cities: Detroit, Hartford, San Fransisco (Pittsburgh, CA), Newark Sizes: Small, Medium, Large These beautiful piece features a gorgeous diamond). The oval shape of this bangle mimics the trigger cage of a gun and serves as a reminder of the destruction that is caused when the trigger of a gun is pulled. Each series carries a serial number that corresponds with one of the premise guns that were seized at crime scenes by the Detroit Police Department. The side of the cuff is hand hammered to symbolize the hard work required, not only of the police, but of each individual, in the fight to get illegal guns off the streets of their community. 20% of the net proceeds from each Caliber purchase will fund future public safety initiatives in the city marked on the bangle.