FKN-50JT-52-2R7 FKN-50JT-52-33R FKN-50JT-52-3R FKN-50JT-52-3R3 FKN-50JT-52-43R FKN-50JT-52-47R FKN-50JT-52-4R7 FKN-50JT-52-8R2 FKN-50JT-52R10R FKN50MJT-52-10RFFT