Plumb Bob, Material Brass, Finish Brass Plated, Included Components String, Weight 0.01 lb, System of Measurement SAE, Tip Material Brass, Includes Additional Tip, Features Comes with Extra Tip, Polished-Lacquer, Solid-Brass Construction is Rust , Replaceable, Hardened Steel Tip, Screw Top Simplifies Attaching String to Center of Plumb, Through Hole for Easy Tightening