The included drill bit quickly make holes in tree root, allowing the Coppers nails to be easily hammered in without bending Coppers nails are used to remove tree stumps and without affecting surrounding plant You will receive a set of tree stump removal tool, includes 15pcs Coppers nails, 1pc drill bit nails, sufficient quantity to meet daily use and replacement needs These hardware nails are mainly make of Coppers and Stainless Steel, which are strong and rustproof, and have long service life Our Coppers nails disrupts tree growth by releasing excessive Coppers ions, helping to trees, stumps, and root, Manufacturer: Msioytog