Magnetic Box Beam Level 34610 it offers a working range bundle product KESNR18200 it offers a working range of 60 feet that can be extended to as far as 300 feet when used with the included REC 410 Line RF receiver The adapter holds the attached device in place and doesn't budge when sufficiently tightened and keeps the attached equipment Its anti slip surface helps in a convenient positioning and levels 32 inches and longer come with two ergonomically designed handles that provide a comfortable grip during use Robust ferrite pole shoe magnets help set up and align ferrous structural materials where workers need to do work hands free