### Exclusive Size For Snapmaker U1 Precision cut in 270×270mm with positioning notches, fits U1 heated bed perfectly without cutting or modification. ### Double Side Gold Textured PEI Coating Two sides covered with even gold granular PEI coating, stable adhesion prevents printed model from warping. ### High Toughness Spring Steel Substrate Spring steel base owns great rebound feature, slight bending to separate finished prints quickly without scraper. ### Wide Filament Compatibility Matches PLA, PETG, ABS, TPU and common filaments, two usable sides for alternating printing. ### Simple Daily Surface Care Remaining filament residue can be wiped away with damp cloth conveniently for long term usage. ### Flexible Integrated Structure Coating tightly bonded with steel base, not easy to peel off under repeated bending and high temperature.