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| 
 American Standard WSA-1; WSA2 & WSK-1; WSK-2 Attachments Roller Chains  | 
|||||||
| 
 Chain  | 
 Pitch  | 
 I  | 
 R  | 
 Q  | 
 J  | 
 L  | 
 O  | 
| 
 P  | 
|||||||
| 
 inches  | 
|||||||
| 
 40  | 
 0.500  | 
 0.906  | 
 0.500  | 
 0.500  | 
 0.685  | 
 0.059  | 
 0.134  | 
| 
 50  | 
 0.625  | 
 1.134  | 
 0.625  | 
 0.626  | 
 0.907  | 
 0.080  | 
 0.217  | 
| 
 60  | 
 0.750  | 
 1.364  | 
 0.750  | 
 0.720  | 
 1.057  | 
 0.095  | 
 0.217  | 
| 
 80  | 
 1.000  | 
 1.807  | 
 1.000  | 
 0.969  | 
 1.396  | 
 0.128  | 
 0.268  | 
| 
 100  | 
 1.250  | 
 2.270  | 
 1.250  | 
 1.252  | 
 1.732  | 
 0.157  | 
 0.362  | 
Note: check attachment dimensions before ordering since manufacturing standards may vary