Crain Flexible 18″ Straight Edge,This straight edge is made from a thin strip of flexible spring steel. It bends easily as necessary to work around obstructions, but afterwards will return to its original flat condition. It works well in tight areas like doorways, corners, and closet areas. Includes a 45° angle on one end for template work, and a hanging hole on the opposite end.Dimensions: 460″ long x 50″ wide x 0.03mm” thick.