[Package]: There are 30pcs in total, enough for daily use, suitable for electric fence of farm, etc.
[Helical Slot]: It is an anti-drop, it would be prevented falling off after inserting protective wire.
[Anti-rust and Durable]: Made of high quality metal. The black plastic cover is of great insulation property, reduce the abrasion to lengthen the service life of wire.
[Hole Diameter]: 1.25cm/0.5inch; Slot width: 4.4mm/0.17inch.
[Easy to Use]: It is a screw-in design, insulated plastic shell, it is a so useful accessory for screwing into wooden posts.