Package & Size: You will receive a set of tree stump removal tools, including 23 copper nails, 1 stainless steel nail, and 1 cobalt drill bit. The copper nails and stainless steel nail measure 3.5 in x 3.5 mm; the drill bit measures 2.7 in x 3.5 mm. Premium Material: These nails are made of pure copper and stainless steel, offering durability, rust resistance, and corrosion resistance for long-term use. The drill bit is constructed from cobalt-infused high-speed steel, providing heat resistance, wear resistance, and resistance to deformation. Tree Stump and Root Removal: The copper nails help inhibit tree growth by releasing copper ions, aiding in the elimination of unwanted trees, stumps, and roots. How to Use: Drill pilot holes into the tree roots using the included drill bit and stainless steel nail, then hammer the copper nails into the holes. Space the nails evenly around the base of the stump for best results. Protects Surrounding Plants: This method allows for targeted stump and root removal without harming nearby vegetation. Color: Copper and silver Material: Copper, stainless steel, cobalt alloy Package Contents: 23 x Copper Nails 1 x Stainless Steel Nail 1 x Cobalt Drill Bit Note: Image color may vary slightly due to lighting and monitor settings. Measurement error is +/- 1-3 cm.