The Omnigrid 360 8" Rotating Cutting Mat makes rotary cutting easy, even in a small space. Rotate the mat instead of your body, which saves time, reduces fatigue and improves accuracy. Details: 8" (20.3 cm) diameter Rotating base lightly suctions to flat table surface Easily rotate with fingertips Improves accuracy 1/2" overall grid lines 30°, 45° and 60° markings