Johnson Level steel plumb bobs and brass plumb bobs come with removable caps for easy, centered string installation. Johnson plumb bobs are built to last, with corrosion resistant finishes on all models, and replaceable hardened steel tips on our brass plumb bobs. A wide variety of plumb bob weights available - from 5 oz. steel plumb bobs to 32 oz. brass plumb bobs. Johnson Level has the plumb bob for you!