The Marshalltown and contractor-grade QLT Line Stretchers are designed to stretch Masons Line between key Line Blocks for a straight guiding line for brick and block work. Both brands of Line Stretchers are made from durable cast aluminum and are available in a variety of sizes to suit your needs. Marshalltown brand Line Stretchers are with Global Materials.Brand Name: Marshalltown Blade Width: 4 in. Blade Length: 12 in. Blade Material: Aluminium Product Type: Line Stretchers Handle Material: Aluminium Handle Number in Package: 2 pk