1.disc suspension insulator 2.Material : Procelain 3.Size: 52-3 We are manufacture for all kinds of overhead line fitting ,such as link fitting ... ,eye bolt ,eye nut ,socket clevis ,hook ,strain clamp ,stay rod ,Procelain Insulator ,such as : 52-3 ... ,56-2,56-3,P-11Y and so on .Hope we ...