Practical Insulator Ring: Electric fence insulator rings are suitable for high-tensile steel wires, aluminum wires, polybraid and polywires, which are very suitable for replacing broken insulators. Easy to Use: Simply screw the screws into the timber fence without any tools. Premium Design: The angled slot can hold electrified wire without energy loss, suitable for low impedance and standard load fence controllers. Materials: Made of Plastic materials, environmentally friendly and durable, can be used as an essential electric fence accessories. Colour: black Material: plastic, metal Size: length 257mm Package Contents: 25 * Electric Fence Insulators Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.