12" long solid 99.9% Pure copper Stake wrapped in 99.9% pure solid copper medium gauge wire Solid Copper Electroculture Plant Stake 4 Pack- Each stake is 12" long solid 99.9% Pure copper wrapped in 99.9% pure solid copper wire Use Electroculture plant stakes for better growing! Electroculture allows you to easily increase yields, accelerate growth rates, and improve crop quality. Reducing the requirements for fertilizer. In short you can grow bigger and better crops in less time, with less effort, and at a lower cost! Simply place stakes 3"-5" deep into soil