250 Series Magnetic Torpedo Levels, 9 in, 4 Vials ORS NASCO Patented locking mechanism holds cable Patented locking mechanism holds cable tight at any position Weather tough aluminum alloy body and vinyl coated cable resist rust and operate in extreme conditions Keyed alike convenience with the removable rekeyable cylinder —key to other Python locking cables Safety clip included Supplied with rubber washer (AWR4) Brass (global investment cast) or iron construction Pressure rating of 150 psi at ambient temperature 70° F Heavy duty grade torpedo level is up to the task under the most demanding jobsite conditions Durable die cast aluminum body Features 1 5° slope button for quick and easy drainage measurement Plumb Site® window enables dual sided viewing Rare earth magnets are 5X stronger than conventional magnets and free up hands for other tasks