Home / Concaves / Concave, Round Bar, Middle/Rear Concave, Round Bar, Middle/Rear Application: S650, S660, S670, S680, S685, S690, 9650STS, 9660STS, 9670STS, 9750STS, 9760STS, 9770STS, 9860STS, 9870STS Features: Heat Treated Weight: 82 lb / 37.19 kg Item Nr.: WN-AH206456 Category: Concaves Related products Concave, Front Plate Concave, Front Plate Concave, Grain Concave, Narrow Spaced, Middle/Rear