Slip Industries SISE15X35X44 Aluminum Straight Edge for Concrete, 4ft,4in x 1 1/2in X 3 1/2in
Available in 4′ to 20′ lengths with kerfed edges and welded end caps. Straightedges are light-weight, durable, easily cleaned and hold a true edge indefinitely. Actual size is 1 1/2″ x 3 1/2″, duplicating the exact size and “feel” of a wooden 2 x 4 makes this perfect tool for straightedging concrete without the problems of warping and waste using wood straightedges or the bulkiness and weight of standard stock aluminum. This is truly the cement mason’s choice. Special order sizes available.
-Extruded to +- 1/16″ tolerance in 10′ for straightness
-Aluminum alloy is heat-treated 60/61 T6
-Tensile strength 30 – 35,000 lbs. per square inch
-Conforms to federal specifications QQ/A250/11 and ASTM B209