Features: Suitable for: This 235x235mm spring steel heat bed is suitable for Ender-3 S1, Ender-3 S1 Pro, Ender-5 S1 and K1 3D printer models. And compatible with most of the FDM 3D printers with a build plate size of 235x235mm.(Please confirm that it is compatible with your printer before purchasing) Smooth PEl Surface for Flat Model Surface: Good adhesion between smooth PEl and various filaments, the model is easy to stick to PEl and the bottom surface is smooth. Stable Performance: PEI material has the characteristics of high temperature resistance, excellent flame retardant, high strength and high rigidity, suitable for long-term use under high temperature conditions. High-strength Spring Steel Plate: Made of high-strength spring steel plate, with good flatness and good elasticity, and no deformation after repeated bending. Bendable and Magnetic Plate: One second to take off printed models without tools, just by bending the plate. And it adopts the strong magnetic stickers, which can maintain high magnetic properties under high temperature to ensure printing stability. Specification: Size: 235*235mm Weight: 430g Material: PEI, Spring Steel Suitable For: Ender-3 S1/Ender-3 S1 Pro/Ender-5 S1/K1 Package Size: 265x250x8mm/10.4x9.8x0.3in Package Weight: 550g/1.2lb Packing List: 1 x K1 Smooth PEI Build Plate Kit