[DIY Project] Use pure copper nails for electroculturing, they seem to work well. They are super easy to use and can be used for other. [Well Made and Sturdy] There are 23 copper nails, 2 stainless steel nails, and 1 drill bit. The included drill bit should prevent them from bending when using them. [Easy to Use] Drill a hole, hammer in the steel nail, remove it, and then hammer in the copper nail. Just make sure you remove some bark and get close to the base of - aim for exposed as much as possible. [Tree Stump Root Removal] Pure copper nails take time to kill the stump. It seems that it works, but the hardness of is the real factor that determines how many times it is used and how long it works. [Ecosystem] Strong copper nails that can tree stumps naturally and not harm the ecosystem., Weight: 0.37919509064 Pounds, Manufacturer: Kueohse