Manufacturer No. - 47-973 UPC - 0761744797378 oz Polished lacquer solid brass construction is durable and rust resistant Replaceable hardened steel tip is long lasting Screw top simplifies attaching string to center of plumb (8oz size comes with an extra tip) Thru hole ensures easy tighteningThis Stanley Brass Plumb Bob comes in an 8-ounce design and is ideal for use in framing, deck building, plumbing, transit location and construction applications. The screw top simplifies attachment of the string to the center of the plumb. The polished-lacquer solid brass construction is durable and rust resistant; the plumb bob's long and slender profile allows for easy storage. The replaceable, hardened steel tip provides longer life and an extra tip is included. The thru-hole ensures easy tightening. This plumb bob is backed by a lifetime limited warranty. PO47-973 Features: -Brass plumb bob.-Replaceable, hardened steel tip is long-lasting (8 oz size comes with an extra tip).-Screw top simplifies attaching string to center of plumb.-Through hole ensures easy tightening. Construction: -Polished-lacquer, solid-brass construction is durable and rust resistant.