3M CI-1/0A Connector , 5 - 35 kV, Compact/Solid; Stranded, 10 per case
This connector is a 1/0 AWG stranded, and has a 0.91 in (23 mm) O.D.
The 3M™ Connector CI-1/0A is used with molded rubber splices 3M™ 5420 Series, 3M™ 5461 splice kit, and 3M™ 5450 Series. It has a connector O.D. of 0.91 inch and a minimum order case quantity of 10 each.