Steel This QLT by Marshalltown Margin Trowel is designed to bring you a reliable tool for all of your Masonry, Flooring and Tiling Projects, no matter whether it is your first project or your thousandth. Comes with a high strength Forged Carbon Steel Blade with a size of 8 Inches (203mm) by 2 Inches (51mm) Includes our signature Soft Grip red handle to increase durability and reduce fatigue.