MaterialFarm electronic fence insulators are made of engineering ABS material that ensures longevity and reliability Good Insulation PerformanceElectric fence bolt insulator has good insulation, high strength, no deformation, and stable operation Suitable forElectric fence insulators are suitable for 9.5mm/0.37in diameter middle poles, used to assist the load-bearing pole in supporting the front fence Wide ApplicationThese screw-tight round post insulators are suitable for electric fences, agricultural fields, gardens, and farms Package IncludesEach package contains 50 pieces of bolt-type insulators for electronic fences, suitable for 9.5mm middle rods Specification: Material: PP Size Chart: Length: 4.8cm/1.89inch Package Includes: 50 Pieces Insulated Fence Insulators Note: Please allow slight errors due to manual measurement and different monitors.