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 inches x 3.5mm, while the drill bit nail measures 2.7 inches x 3.5mm. This set provides sufficient quantity for regular use and replacements. Premium Material: These nails are made of pure copper and stainless steel, offering durability, rust resistance, and long service life. The drill bit is constructed from cobalt-infused high-speed steel, providing resistance to heat, wear, and deformation. Effective Stump Treatment: Copper nails can disrupt tree growth by releasing copper ions, which may assist in managing unwanted trees and stumps. How to Use: Pre-drill pilot holes 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. Protect Surrounding Plants: This method allows for targeted treatment of tree stumps without harming nearby vegetation. Color: Copper and silver Material: Copper and stainless steel Package Contents: 23 x Copper Nails 1 x Stainless Steel Nail 1 x Drill Bit Note: Light reflection and different display settings may cause slight variations between the color shown and the actual product. Measurement error allowance is +/- 1-3 cm.