How much of that stuff have you already spilled all over your desk, table or carpet? The Dyna King Reservoir is stainless steel, has a rubber base, broad, square, heavy and hard to tip over. An airtight seal is formed by the tapered bodkin (included) which prevents premature evaporation and hardening of most cements. It can be cleaned easily with a little solvent. Don’t spill your head cement ever again!