Features: 1. High quality silicone: Non-toxic and Odorless. Resists corrosion and out of shape. 2. Excellent heat insulation performance: Can be resistance to high temperature of 500℃. 3. 4mm thickness. More durable and protective. Precise manual measurement. 4. Multifunctional: Heat-resistant, anti-slip, and corrosion resistant. Built-in scale ruler (0-24 cm). Magnetic and Non-magnetic mats for your selection. 5. Screw positioning area: Can help put different screws in proper place. More easy to identify.. Material: Silicone Color: Light Blue Dimensions (Optional): (Magnetic): 450 * 300 mm or basic 200*300mm