copper nails Package & 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, sufficient quantity to meet your daily use and replacement needs. The size of copper nails & stainless steel nail is 3.5in x 3.5mm, the drill bit size is 2.7in x 3.5mm 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. Remove Tree Stumps: Our copper nails disrupt tree growth by releasing copper ions, helping to eliminate trees and stumps How to Use the Nails Set: First, make pilot holes in wood using the drill bit and stainless steel nail, then hammer the copper nails into the holes, finally place the nails evenly around the base of the stump. Protect Surrounding Plants: Copper nails are used to remove tree stumps without affecting surrounding plants Colour: Copper + silver Material: Copper Package Contents: 23 x copper nails 1 x stainless steel nail 1 x drill bit 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 to be a little different from the real thing. The measurement allowed error is +/- 1-3cm.