The RF1 Model is the only patent pending design with a naturally focusing conical reservoir with added depth and solid walls to further protect the precious contents. WITH AN INCLUDED GRADE 2 TITANIUM PICK/UTENSIL. Never lose any concentrate again by using  shallow flat containers from other competitors. The RF1 Model guarantees the most protection and ultimately minimizing the amount of wasted material that is lost in the crevasses/corners and threading of other concentrate containers on the market. So save you and your wallet the trouble and upgrade to the most efficient container, The RF1 Model, to protect your concentrates.