These neon, colorful lightning bolt acrylic earrings will add some pizazz to your look. As part of the Zig Zag Pow! Collection, earrings are interchangeable and stackable like earring jackets. The bolt is designed as an earring backing, so there is a hole instead of a post centered at the top of the earring. Use a stud in front, and the bolt as a backing to create a layered look. Bolts measure about 4cm long.