The 3R15C knee joint is a polycentric knee that is best suited to be used for low functional level and high need for safety. The frame construction is made of superlight aluminum alloy and the 4-bar linkage is made of aircraft alloy (AA7075).
| Product Number | Material | Standard | Part Weight | Weight Limit |
| 3R15C | Aluminum | 406g | 45Kg/99lbs |
The 3R25C knee joint is best suited for use with low functional level and high safety needs. The frame construction is made of stainless steel alloy and has visco-elastic behavior with adjustable constant friction control for swing phase.
| Product Number | Material | Standard | Part Weight | Weight Limit |
| 3R25C | stainless steel | 420g | 45Kg /99lbs |