The sprocket wheel is divided
into A、B two major type，
Pitch divided into： 9.525、12.70、15.875、19.05、 25.40、31.75、38.10、44.45、50.80 The tooth number is divided
into：10、11、12………60 Tooth
The aperture made according to the customer request
Can make to other specifications according to the customer request
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