3/4 in through 6 in equipped with an additional bonding screw to install bonding jumper where requiredCan be added to an existing installation without disconnecting conductorsEspecially suited for grounding old work, but equally convenient for new, grounding wedges provide grounding without a jumper except in concentric knockouts
T&B® 3659 Grounding Wedge, 4 in Trade, For Use With IMC/Rigid Conduit, Bronze, Tin Plated