Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Excellent adhesion with one side textured spray PEI and one side smooth surface PEO spring steel plate, it has strong adhesion to adhere the model in a better way. You can use either side. Special Material: made of steel plate which is inherently flame resistant and low in smoke production, high strength and heat resistance. Excellent Flatness: It provides the most flat build surface in the market, ensuring high flatness for the bottom of print, to make sure the model can be firmly attached to the surface of the print platform. Easy for removal: Peel up the top part from the heat bed and bend it to models easily as it's flexible. Material: steel plate Color as shown Package Contents: 1 x one side textured spray PEI and one side smooth surface PEO spring steel plate Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.