Item # | 
                        
                            No. Teeth | 
                        
                            Stock Bore | 
                        
                            Max. Bore | 
                        
                            Pitch Diameter | 
                        
                            Hub Diameter | 
                        
                            Style | 
                                                        
|---|---|---|---|---|---|---|
| U-3940A8 | N/A 8 | N/A 1.500 in | N/A | N/A | N/A | N/A Type A | 
| U-3940A9 | N/A 9 | N/A 1.500 in | N/A | N/A | N/A | N/A Type A | 
| U-3940A10 | N/A 10 | N/A 1.500 in | N/A | N/A | N/A | N/A Type A | 
| U-3940A11 | N/A 11 | N/A 1.500 in | N/A | N/A | N/A | N/A Type A | 
| U-3940A12 | N/A 12 | N/A 1.500 in | N/A | N/A | N/A | N/A Type A | 
| U-3940C8 | N/A 8 | N/A 1.500 in | N/A 4.440 in | N/A 15.679 in | N/A 7.000 in | N/A Type C | 
| U-3940C9 | N/A 9 | N/A 1.500 in | N/A 4.440 in | N/A 17.543 in | N/A 7.000 in | N/A Type C | 
| U-3940C10 | N/A 10 | N/A 1.500 in | N/A 4.440 in | N/A 19.416 in | N/A 7.000 in | N/A Type C | 
| U-3940C11 | N/A 11 | N/A 1.500 in | N/A 4.440 in | N/A 21.297 in | N/A 7.000 in | N/A Type C | 
| U-3940C12 | N/A 12 | N/A 1.500 in | N/A 4.440 in | N/A 23.182 in | N/A 7.000 in | N/A Type C |