FIXED SPROCKET SPROCKET MODELS: 938 941 942 945 946 947 950 951 138 141 142 146 151 156 162 FEATURES: PITCH: 325 INCHES TEETH: 7 HOLE DIAMETER: INTERNAL 15 mm HOLE LENGTH: 14,1 mm BELL DIAMETER: INTERNAL 63,4 mm BELL HEIGHT: 14,9 mm BEARING COMPOUND: 12X15X13 COMPATIBLE OLEOMAC MN