High quality,good insulation,erosion control Reasonable price,quick delivery Material:Bulk molding compound and unsaturated polymer with fiberglassType:SM25,SM30,SM35,SM40,SM51,SM76Tensile strength:1000lbsVoltage withstand:15kvCertificate:RoHSPackage:20pcs/bag,10pcs/bag SM51 busbar insulator,standoff insulator