The C-flat Holey Carbon TEM Grid is an ultra-flat, holey carbon-coated support grid designed for high-resolution transmission electron microscopy (TEM). This grid, with a thickness of approximately 20 nm, features a precise 1.2 µm hole diameter and 1.3 µm hole spacing on a robust 300 copper mesh. Its unique manufacturing technology eliminates common artifacts such as excess carbon and irregular edges around holes, ensuring a pristine surface. The ultra-flat surface promotes superior particle dispersion and more uniform ice thickness, crucial for optimal cryo-EM sample preparation. Manufactured without plastics, these grids arrive exceptionally clean, requiring no residue removal prior to use. This combination of flatness, cleanliness, and precise hole patterns makes C-flat grids indispensable for achieving high-quality data and clear visualization in demanding cryo-EM and other TEM applications. Supplied in a pack of 50, these grids offer ample supply.