Package & Size: You 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. Sufficient quantity for daily use and replacements. Premium Material: These hardware 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, resistant to heat, wear, and deformation. Tree Stump Removal: Copper nails help inhibit tree growth by releasing copper ions, aiding in the removal of unwanted trees and stumps. How to Use: 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 helps remove tree stumps without harming nearby vegetation. Color: Copper + Silver Material: Copper, Stainless Steel, Cobalt High-Speed Steel Package Contents: 23 x Copper Nails 1 x Stainless Steel Nail 1 x Drill Bit Note: Light reflection and display differences may cause slight variations between the product color in images and actual color. Measurement error allowance: +/- 1–3 cm.