Package and Size: A set of tree stump removal tools. Includes 23 copper nails, one stainless steel nail, and one cobalt drill bit. The copper nails and stainless steel nail measure 3.5 inches by 3.5mm. The drill bit nail size is 2.7 inches by 3.5mm. Premium Material: These hardware nails are made of pure copper and stainless steel, which are sturdy and durable. They are rust proof and anti-corrosion for 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: Copper nails disrupt tree growth by releasing excessive copper ions, helping to eliminate stumps. How to Use the Nails Set: Make pilot holes with the drill bit and stainless steel nails. Hammer the copper nails into the hole. Drive the nails out evenly around the base of the stump. Protect Surrounding Plants: Copper nails are used to remove tree stumps without affecting surrounding plants. Colour: Copper and silver. Material: Copper. Package Contents: 23 copper nails, one stainless steel nails, one drill bit. Only the above package content, other products are not included.