This is a sterling silver stamped .925 snake bracelet 20cm 8 Inch with the European style clasp, that will fit all of the European style beads. It is 3mm thick and has the screws points on the ends as well as along the chain. This enables you to use any threaded charm as a stopper bead. The glass and silver beadss slide on over the non-clasp end of the bracelet; if none of your beadss are threaded, you can use a clip charm to hold them in place. The clip charm stops the whole lot from sliding into your lap when you are putting the bracelet on and taking it off, and when closed it looks like another bead. In order to determine the length of bracelet, it is recommended that you measure your wrist, and then add 1." or 3cm