This Formlabs Form 2 LT resin tank delivers longer service life for non-castable resins in your Form 2 3D printer. This replacement tray is ideal for helping you to expand production or to replace a lost or damaged resin tank. This LT resin tank is specially made to work with the two modeling resins, High-Temp and Gray; it is required for use with the Formlabs Gray resin. Choose the original resin tank for castable resin varieties, Formlabs Blue and Purple. Use the included lid to cover the tank and store in a cool, dark place when not in use.