Zareba Fi-Shock IW5XNY-FS Nail-On Extender Insulator, Yellow

Use for extending wire 5 in from wooden posts. Fastens electrified wire to wooden post without losing energy through the post. For 9 to 22 ga high-tensile steel wire and aluminum wire, all polywire (both regular and heavy-duty) and polyrope of diameter up to 1/4 in. Yellow color. 25/Bag.