LeverLock® Tape Measure, 1 in W x 25 ft L, SAE, Black Yellow ORS NASCO General purpose sealant seals medium General purpose sealant seals medium to coarse straight and tapered pipe threads and fittings Controlled lubricity prevents galling and protects mated threaded areas from rust and corrosion with layout bar stair guide to determine out of square corners 1 4 in spaced notches to facilitate scribing lines Black filled markings with layout bar and blue book Seamless blade retraction with push release self locking mechanism High impact ABS case with durable rubber shell withstands heavy use Engineered for abrasion resistance with polymer coated blade Measure accurately using corrosion resistant Tru Zero® end hook Non marring base helps protect work surface