Features: Our copper nails disrupts tree growth by releasing excessive copper ions, helping to eliminate trees, stumps, and root. These hardware nails are mainly make of copper and Stainless Steel, which are strong and rustproof, and have long service life. Copper nails are used to remove tree stumps and without affecting surrounding plant. The included drill bit quickly make pilot holes in tree root, allowing the copper nails to be easily hammered in without bending. You will receive a set of tree stump removal tool, includes 15pcs copper nails, 1pc drill bit nails, sufficient quantity to meet daily use and replacement needs. Specifications: Materials: Copper and Stainless Steel Copper Nail Length: about 8cm/3.15inch Steel Nail Length: about 6cm/2.36inch Package Includes: 15PCS Copper Nails 1pc Drill Bit Nails note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to difference between different monitors, the picture may not reflect the actual color.