Lead Electrode Strips; 4in X 0.75in X 0.06in (Pack of 10) are very high quality strips that are clearly marked with a material identifier on each strip and are used for students' various electrochemical experiments. Various other metal electrode strips are available as well: Tin (SKU# PH0927H), Carbon (SKU# PH0927C), Aluminum (SKU# PH0927A), Brass (SKU# PH0927B), Iron (SKU# PH0927J), Nickel (SKU# PH0927G), and Copper (SKU# PH0927E).