copper nails 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, while the drill bit nail measures 2.7 in x 3.5 mm. This set provides sufficient quantity for regular use and replacements. Premium Material: 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 regrowth by releasing copper ions, assisting in the natural decomposition of stumps. How to Use: Create pilot holes using the included drill bit and stainless steel nail, then insert 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 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.