Abstract: A working clamshell blister package for a pliers or similar tool includes a pair of opposing mirror-image panels having recesses and joined along a common lower end to form a base portion. The base portion is provided with a pair of openings for accomodating the handles of the pliers and has a bridge formation located between the openings. When the opposing panels are placed in contacting relation, a compartment is formed in which the working portion of the pliers may be enclosed, with the junction of the pliers members being supported by the bridge formation. A pair of pliers contained in the package may be manipulated a specified extent by the customer prior to purchase without opening the package.