A locking tool includes a handle and an elongated tool blade having a body and a tang. An improved catalyst for use in the electrochemical reduction of oxygen comprising a perovskite-type compound having alpha and beta sites, and having a greater molar ratio of cations at the beta site. Each of said plurality of terminals includes a computer system that handles video calls from the speech and hearing impaired subscribers and a telephone station that handles voice calls to parties communicating with the speech and hearing impaired subscribers. The exhaust gas catalytic converter has an upstream catalyst and a downstream catalyst which are arranged in upstream and downstream sides of an engine exhaust passage through which exhaust gas flows. The charger supplies power to the electric vehicle.