Usage Tips:Package Contents: 25 copper nails, 1 cobalt drill nail, etc. A set of tools for removing tree stumps, which can meet daily use and replacement needs. [Remove Stump Roots] It helps to remove stumps and roots by releasing excessive copper ions to damage tree growth. : These hardware copper nail stump killer sets are mainly made of pure copper and stainless steel, which are durable, rust-proof and corrosion-resistant. The copper nail stump killer is made of 99% pure copper, which is thicker than other products and has a long service life; the drill bit is made of cobalt-containing high-speed steel, which is resistant to high temperature, wear and deformation. Simple to use: Copper is a soft material, drill holes on the roots, then hammer the copper nails into the holes, and finally evenly place the nails around the bottom of the stump. [Reusable] The stump killer can be taken out and reused after use. Trees with a diameter greater than 2 feet require 10 or more copper nails. Note:Due to different production batches, there are differences in styles and colors, which does not affect use. Colour:Copper Color and Silver Material:copper Package Contents: 25 x copper nails 1 x drill bit Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.