Meridian Labs Rotary Union High Current MC - 2000Slip Ring Design Capsule Configuration Drum TypeMaximum Current 2000 amps Operating Temp ? to 160 F (? to 344 K) Electrical Noise 1 (milli-Ohms)Leads Radial Leads Outer Diameter 4.5 inch (114 mm) ,NEW has some minor scratches from handlingLoc. BA - 8