Copper is a soft material, drill holes on , then hammer the copper nails into the holes, and finally evenly place the nails around the bottom of the stump. 15 copper nails, 1 cobalt drill nail, etc. A set of tools for removing tree stumps, which can meet daily use and replacement needs. The size of the hardware nails for trees and stainless steel nails is 3.14 inches x 3 mm, and the size of the drill nails is 2.3 inches x 3 mm. These hardware copper nail stump sets are mainly made of pure copper and stainless steel, which are , rust-proof and -. The copper nail stump is made of 99% pure copper, which is thicker than other products and has a long service life; the drill bit is made of cobalt-containing high-speed steel, which is to high temperature, wear and deformation. It helps to remove stumps and by releasing excessive copper ions to damage tree growth. The stump can be taken out and reused after use. Trees with a diameter 2 feet require 10 or more copper nails. This versatile copper nail stake kit is not only great for killing unwanted trees, stumps and , but can also be used as a helpful tool for different DIY projects., Manufacturer: Ounfhtrttk