Item # | 
                        
                            Stock Bore Diameter | 
                        
                            Chain Size | 
                        
                            No. Teeth | 
                        
                            Max. Bore | 
                        
                            Weight | 
                        
                            Style | 
                                                        
|---|---|---|---|---|---|---|
| 25B48 | N/A 0.500 in | N/A 25 | N/A 48 | N/A 1.375 in | N/A 0.560 lb | N/A B | 
| 25B54 | N/A 0.500 in | N/A 25 | N/A 54 | N/A 1.375 in | N/A 1.000 lb | N/A B | 
| 25B60 | N/A 0.500 in | N/A 25 | N/A 60 | N/A 1.375 in | N/A 1.100 lb | N/A B | 
| 25B72 | N/A 0.500 in | N/A 25 | N/A 72 | N/A 1.375 in | N/A 1.300 lb | N/A B |