Package and Size: You will receive a set of tree stump removal tool, includes 12 x copper nails, 1 x stainless steel nail, 1 x cobalt drill bit nails, sufficient quantity to meet your daily use 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 Premium Materials: These hardware nails are mainly made of pure copper stainless steel, which are sturdy , rust proof anti-, have a long service life; The drill bit is made of cobalt containing high speed steel, which is resistant to heat, wear deformation Remove Tree Stumps : Our copper nails disrupts tree growth by releasing excessive copper ions, helping to eliminate trees, stumps, How to Use the Nails Set: , make pilot holes in by drill bit stainless steel nails, then hammer the copper nails into hole, finally 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: 12 x copper nails(9cm) 1 x stainless steel nails 1 x drill bit Only the above package content, other products are not included Note: Light reflection 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