You can use the Stanley hand tools brass plumb bob (47-973) for framing, deck building, plumbing, transit locations and construction applications. It comes with a screw top to easily attach string to its center and the hole has simple tightening applications as well. This Stanley plumb bob is made from polished lacquered solid brass to resist rust and is in a long slender profile for convenient storage. The hardened steel tip is also replaceable, allowing you to prolong the life of the tool. Polished-lacquer, solid-brass construction is durable and rust resistantReplaceable, hardened steel tip is long-lastingScrew top simplifies attaching string to center of plumbComes with extra tipThrough hole for easy tighteningAdditional tip includedThrough hole for easy tighteningBrass8 oz.