The company Jefa Rudder (Jefa Marine A/S) is based in Greve, near Copenhagen in Denmark. Since it was founded in 1980, the company has produced over 150,000 high quality rudder bearings for series production boatyards worldwide. Jefa rudder bearings are quick and easy to install and easy to maintain. No readjustment or lubrication is necessary. They feature a unique needle bearing design that will give you years of reliable operation with no play or material wear on the rudder shaft.