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 Premium Material: These hardware nails are mainly made of pure copper and stainless steel which are sturdy and rust proof and anti- 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 and : Our copper nails disrupts tree growth by releasing excessive copper ions helping to eliminate trees stumps and 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. Protect Surrounding Plants: Copper nails are used to remove tree stumps and without affecting surrounding plants Colour:Copper and silver Material:copper Package Contents: 23 x copper nails 1 x stainless steel nails 1 x drill bit Only the above package content other products are not included. The measurement allowed error is 1-3cm.