Home / Unsorted / Concave Adjusting Worm Gear Concave Adjusting Worm Gear Application: 9860STS, 9660STS, 9760STS, 9560STS, 9570STS, 9870STS, 9670STS, 9770STS, S550, S660, S670, S680, S690 Weight: 5 lb / 2.00 kg Item Nr.: WN-AH224006 Category: Unsorted Related products Pan, Front, Finger Idler, Pulley Glass, Front, Windshield Fan Speed Tone Wheel