This rotating mat glides around on stainless steel ball bearings, making precise and accurate cutting a breeze. Clearly marked lines for ease of use. Two-sided for a longer life and the option to cut without lines. One side is blue with white lines, the other side is solid pink. Tabs along the sides make it even easier to turn. Trim up to a 12″ block. Set includes 2 round mats and turntables measuring 18″ and 6″, plus an 18″ acrylic circle for additional stability.