This product includes: Spring Steel Sheet With Smooth Double-sided PEI (1 pcs) PEI-Ultem sheet (already mounted and fixed in place on the steel sheet) (2 pcs) To replace the part/s, please consult our Assembly Manuals. Make sure to follow the manual for your printer model. Find more details about the spring steel sheets in our knowledgebase. Note: Consumable parts, such as PEI sheets (smooth, textured, etc.) are not covered by warranty as the coatings are designed to diminish over time unless failure has occurred due to a defect in materials or workmanship. Cosmetic damage, including but not limited to scratches, dents, cracks or other cosmetic damage is also not covered by the warranty. Only defective sheets on arrival are covered by warranty.