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Can be used with all fence wire, including high tensile, poly wire, poly rope
Designed to withstand the additional tension generated by the fence line pulling from the anchor point
UV-protected to resist weathering,Very versatile and strong insulator
Easy attachment to fence post or wire
20 per pack, Middle hole Diameter: 11 mm

20Pcs Black Circular Ring Corner Post Electric Fence Insulator, corners post Insulator for Electric Fence Wire