Material and Size: Ring insulator head Made of combination materials, the is smooth and thorn-free. This is cheaper than other PVC and has excellent high and low temperature resistance. Screw-in ring insulator - steel with anti-rust coating, self-tapping threads. Insulator Dimensions: Overall Length = 3.7 inches This electric fence insulating ring is a third generation product. Made of materials. High strength, good insulation, no deformation, sunproof and rainproof. Eco-friendly and completely harmless to people, pets and wildlife. Electric fence ring insulator for wire, stranded wire, rope and electric fence tape, can be used as a start, end, corner or line insulator. This electric fence insulator chute accommodates wires without energy loss and is suitable for low impedance and standard load fence controllers. Insulator Quantity:100PCS Colour:B:Black & Silver Material:PP+PE+Metal Package Contents: 100 * insulator 1 * Insulator socket tool Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.