A locking device (10) includes a pair of end pieces (12, 14) and a locking member (16). One end piece (12) receives an end of the locking member, while the other end piece (14) is configured to receive the other end when the locking member is inserted through an object to lock the locking device to the object. The end pieces are formed together via a forming process, and are joined together via at least one frangible element or portion (18, 20) that is formed or molded during the forming process. The end pieces thus may be separated via breaking the frangible element or elements when it is desired to lock the locking device to an object. Multiple locking devices may be formed together and may be joined via frangible portions or elements such that a strip or series (22) of locking devices may be unitarily formed together.
