Insulation O.D. min 1.24"(31,5 mm) - max 2.07" (52,6 mm). This splice kit is a 25/28 kV-class inline splice for joining jacketed concentric neutral (JCN) and concentric neutral (CN) power cables. It is a cold shrink design sized to fit Type MV-90 or Type MV-105 cables with a copper conductor size of 1000 kcmil.