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Supercraft Steel Plumb Bob 300g Chrome Plated TLB0300 supplier beanonline The 3M Cool Flow™ exhalationThe Supercraft Steel Plumb Bob 300g Chrome Plated (TLB0300) is a precision vertical alignment tool used to ensure that a point on a ceiling, wall, or structure is directly above a corresponding point below. An essential tool for plumbers, electricians, and builders, it is particularly well suited to pipe installation, ductwork, and fan installation where precise vertical alignment is critical. The 300g weight provides sufficient mass for stable,