Package & Size: You will receive a set of tree stump removal tools, including 23 x copper nails, 1 x stainless steel nail, and 1 x cobalt drill bit. The size of the copper nails and 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, making them sturdy, rust-resistant, and durable. 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 kill trees and stumps. How to Use the Nails Set: First, make pilot holes in the tree stump using the drill bit and stainless steel nail, then hammer the copper nails into the holes, and finally drive 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 cobalt drill bit. Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. A measurement error of +/- 1-3cm is allowed.