A metal buckle includes a metal receptacle member and a metal clasp. The metal receptacle member includes a first opening and second opening. The metal clasp is configured to be inserted into the first opening of the metal receptacle member, and includes a base member, a locking device and a spring. The spring is configured to bias the locking device outwardly from the base member, and the locking device is configured to engage the second opening of the metal receptacle.