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 in x 3.5 mm; the drill bit measures 2.7 in x 3.5 mm. This set provides 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, providing heat resistance, wear resistance, and reduced deformation. Tree Stump and Root Removal: Copper nails help disrupt tree growth by releasing copper ions, aiding in the elimination of unwanted trees, stumps, and roots. How to Use: Drill pilot holes into the tree roots using the included drill bit and stainless steel nail. Insert the copper nails into the pilot holes, then evenly space and hammer them around the base of the stump. Protect Surrounding Plants: This method allows for targeted stump and root removal without harming nearby vegetation. Color: Copper and silver Material: Copper, stainless steel, cobalt alloy 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 is +/- 1-3 cm.