Features: The bottom of the model is smooth and easy to clean. It is used on both sides and firmly adhered. High temperature resistant effect is good, with adhesive backing, which can be stuck on the hot bed platform, durable. The heater has fast performances and shorter duration after printing. Suitable for all kinds of filaments, especially for PLA and ABS. Specifications: Material: Soft Magnet Steel Size: 180mm, 220mm, 235mm, 310mm(optional) 180mm: Approx. 18x18cm/7.08x7.08 inch 220mm: Approx. 22x22cm/8.66x8.66 inch 235mm: Approx. 23.5x23.5cm/9.25x9.25 inch 310mm: Approx. 31x31cm/12.20x12.20 inch Total Thickness: Approx. 2.3mm/0.09 inch Applicable Models: for KP3S/CR10/Ender3 3d printers Note: Please allow 1-2cm errors due to manual measurement,pls make sure that you do not mind before you mind. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x PEI Steel Plate