Kraft Tool Co.® SL4848 48” Cast Aluminum Professional Level with 6 Vials. This handy 48" durable cast aluminum level will not warp or rust making it a choice for many different jobs. The heavy-duty level is precision milled for an accurate work surface. The outer perimeter of the level has a contractor's red, super hard professional work surface. Three sets of two solid set vials include level and plumb levels for leveling from different angles. Six Cat's Eye Yellow double bent vials are solid set for accuracy. Double bent vials make accurate leveling easier. The signature red rings encircling the vials provide contrast to the yellow vials making it easier on the eyes to read. Each vial features permanent lines that won't fade or wear away. The level is guaranteed accurate to .0004" per inch. The glass vials are protected by lenses to extend the life of the level. Large hand holes provide comfort and ease when moving the level. Hand holes on each end feature an indention for convenient hanging storage when not in use. Store in a Professional Level Case (#SLPLC48), sold separately, to protect your level and extend its life.