750gm, Desiccant Moisture Absorber, Built In A Canister Can, This Reusable Unit Automatically Absorbs Humidity Inside The Safe, Protects Valuables, Papers & Metal Products From Corrosion, Especially Firearms, When Lid Insert Turns From Blue To Pink, Place Desiccant Can In A Pre-Heated Oven To Remove Moisture, Place Back In Safe For Further Use.