This iMATE 28 14P Female Receptacle Kit has an ingress protection rating of IP67, IP68 and IP69K. The voltage rating is 300V and the Amperage Rating of this Receptacle Kit is up to 23A. The Receptacle D Hole Mounting is 0.79in. DIA. / 0.75in. to the flat and the Max Cable Diameter is 0.50in. The Basic Plug Max. OD Over Coupling Nut for this product is 0.94 in. and the In-Line Receptacle Max. OD is 0.87in. For additional details please refer to the specifications section below.