Package & Size: You receive a set of tree stump removal tools, including 12 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, and the drill bit measures 2.7 in x 3.5 mm. This set provides sufficient quantity for daily use and replacements. Premium Materials: 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. Tree Stump Removal: Copper nails help inhibit tree growth by releasing copper ions, which assist in killing unwanted trees and stumps. How to Use: First, create pilot holes using the drill bit and stainless steel nail. Then, hammer the copper nails into the holes, spacing them evenly around the base of the stump. Protect Surrounding Plants: This method allows for targeted stump removal without harming nearby vegetation. Color: Copper & Silver Material: Copper, Stainless Steel, Cobalt High-Speed Steel Package Contents: 12 x Copper Nails (9 cm) 1 x Stainless Steel Nail 1 x Drill Bit Note: Light reflection and display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1–3 cm.