1. Name:Octagon Insulator 2. Model: 4000 FeatureVariety of Color Variety of Screw M5, ... Made of bulk molding compound, unsaturated polymer with fiber glass(BMC, DMC), Good electrical resistance, heat resistance, fire resistance, low shrinkage ... .Dia.Depth457Fig. 1M10, 3/8-161510001030 4000 bus bar Octagon Insulator