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3R30 Modular knee joint for disarticulation, polycentric, with mechanical extension assist 3R21 Modular knee joint for disarticulation, polycentric, with mechanical extension assist 4 slotted bushings 4 Belleville spring washers 1 set screw 2 lock rings 2 lock nuts 2 stops 1 extension assist spring 1 bearing for extension assist 1 guide for extension assist 1 plastic guide 1 knob for extension assist 4 truss head screws 4 two-hole nuts 2 set screws

Spare parts-pack for 3R30 and 3R21

Item #: 4D7

Product Details
3R30 Modular knee joint for disarticulation, polycentric, with mechanical extension assist 3R21 Modular knee joint for disarticulation, polycentric, with mechanical extension assist 4 slotted bushings 4 Belleville spring washers 1 set screw 2 lock rings 2 lock nuts 2 stops 1 extension assist spring 1 bearing for extension assist 1 guide for extension assist 1 plastic guide 1 knob for extension assist 4 truss head screws 4 two-hole nuts 2 set screws