This dual purpose "can wrench" gives you a larger thermoplastic handle than the Bell standard version, with a 3/8" socket for use on live binding posts and a 7/16" socket for opening cabinets/terminal and Pedstal locks.
Each socket is deep-drawn from hardened steel. The 3/8 inch socket has black oxide with a tubular dielectric jacket for extra safety around live conductors. The 7/16 inch socket is bright electroplated.