The Simalube automatic pressure lubrication cartridges work with a timer and battery for up to 12 months and are variably adjustable in between. A pulse is delivered with the battery so that the grease is slowly squeezed out. Ideal for hard-to-reach places such as the rudder and screw shafts. In places where the grease has no free passage, it is advisable to install the Simalube pressure booster that delivers up to 10 bar. The cartridges are filled with industrial marine grease.