Based on demand, the 17" square rotating mat rides on the success of the popular 12" square rotating mat. This green rotating, self-healing, professional quality rotary mat features a smooth 360 degree rotation--eliminating the need to move your body or your project. It's simple to use, just cut, rotate mat, and cut again! Non-slip back for stable and safe cutting. Easily make 30 degree, 45 degree, 60 degree and 90 degree cuts. Especially designed for use with OLFA rotary cutters. Rotary mats protect your work area and greatly extend the life of your rotary blades.