REAR DRIVE SPROCKET FOR McCULLOCH MACHINE SAWS + ROLLER CAGE FOR MODELS: 7-38, 738, 7-40, 8-38, 838, 8-42, 842, CS330, 360, 370, 400, 3516 DIMENSIONS: (A) BORE: 9 MM (B) OUTER DIAMETER: 66.5 MM (C) INNER DIAMETER: 63.5 MM THROUGH PITCH: 3/8" NO. OF TEETH: 6 CODE: 656120 ORIGINAL CODE: 5300057905 McCULLOCH VR