ScaffoldMart's 36-in. Combination and 46-48-in. Combination Trowel Blades fit most popular patterns. The 36-in. blades are 14 in. long by 8 in. wide with a 1.9 mm thickness. The 46-48-in. blade is 18 in. long by 8 in. wide with a 1.9 mm thickness. The steel is a special alloy for very high tensile strength giving the blades increased stiffness. Features include a bar that is chamfered on corner edges, rivets countersunk on top, flush on the bottom, and a slightly bent leading and side edges.