Usage Tips:Package and Size: You will receive a set of tree stump removal tool, includes 23 x copper nails, 1 x stainless steel nail, 1 x cobalt drill bit nails, sufficient quantity to meet your daily use and replacement needs. The size of copper nails and stainless steel nail is 3.5in x 3.5mm, the drill bit nail size is 2.7in x3.5mm. How to Use the Nails Set: make pilot holes in by drill bit and stainless steel nails, then hammer the copper nails into hole, finally drive the nails out evenly around the base of the stump. Remove Tree Stumps: Our copper nails disrupts tree growth by releasing excessive copper ions, helping to eliminate trees, stumps. Premium Material: These hardware nails are mainly made of pure copper and stainless steel, which are sturdy, rust proof and anti-corrosion, and have a long service life The drill bit is made of cobalt containing high speed steel, which is resistant to heat, wear and deformation. Protect Surrounding Plants: Copper nails are used to remove tree stumps and without affecting surrounding plants. Colour:As Shown Material:copper Package Contents: 1set x copper nails for killing trees Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.