Grounding Bushing, Type Threadless, Set Screw, Trade Size 2-1/2 Inch, Wire Size 6 AWG Standard to 250 KCMIL Standard, Lug Type Lay-In, Aluminum, Conductor Material Copper/Aluminum, Throat Type Insulated, Diameter 3.38 Inch, Height 0.88 Inch, Material Zinc Plated Malleable Iron Body, Zinc Plated Steel Clamping Screw/Set Screw, Approval UL 467, CSA C22.2, Used On Threaded/Threadless Rigid Metal Conduit/IMC, Used with a Locknut to Terminate Conduit at an Enclosure, Lug Used to Connect Bonding Jumper to a Neutral Bus Bar