or 12-inch tiles diagonally

10" Blue Steel Pool Trowel has a 10" by 3" wide flexible blue steel blade attached to 3" aluminum shank

and a titanium-coated wheel work together with a wide breaker foot and adjustable extension arms to handle tiles up to 48" x 48" straight and 34" x 34" diagonal

Sliding Square 45°/90°

Made to precise specifications for optimal performance

5-Piece L-Shaped Aluminum Screed Set (1-1/2', 2', 3', 4', 6') Crain 372 18" Scribing Tool or 12-inch tiles diagonally. Tile Straightedge L shaped aluminum straight edge set. This 6 piece tile Straightedge Set is made of tempered aluminum, which is lightweight and tough. It comes in sizes 1 1 2', 2', 2 1 2', 3', 4', and 6'. This item ships in oversized or multiple boxes.