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 inches x 3.5mm, while the drill bit measures 2.7 inches x 3.5mm. This set provides sufficient quantity for regular use and replacements. Premium Material: The 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. Function: These copper nails are designed to assist in tree stump removal. Copper ions released from the nails may affect tree growth over time. To use, create pilot holes using the included drill bit and stainless steel nail, then insert the copper nails into the holes around the base of the stump. Protect Surrounding Plants: This method allows for targeted stump treatment while minimizing impact on nearby vegetation. Color: Copper + Silver Material: Copper, Stainless Steel, Cobalt-Infused High-Speed Steel Package Contents: 23 x Copper Nails, 1 x Stainless Steel Nail, 1 x Drill Bit Note: Light reflection and different displays may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3cm.