Item # | 
                        
                            Number of Teeth | 
                        
                            Outside Diameter | 
                        
                            Pitch Diameter | 
                        
                            Caliper Diameter | 
                        
                            Roller Diameter | 
                        
                            Weight | 
                                                        
|---|---|---|---|---|---|---|
| H40G12 | N/A 12 | N/A 2.166 in | N/A 1.932 in | N/A 1.620 in | N/A 0.313 in | N/A 0.300 lb | 
| H40G13 | N/A 13 | N/A 2.329 in | N/A 2.089 in | N/A 1.761 in | N/A 0.313 in | N/A 0.40 lb | 
| H40G14 | N/A 14 | N/A 2.491 in | N/A 2.247 in | N/A 1.934 in | N/A 0.313 in | N/A 0.40 lb | 
| H40H15 | N/A 15 | N/A 2.652 in | N/A 2.405 in | N/A 2.079 in | N/A 0.313 in | N/A 0.5 lb | 
| H40H16 | N/A 16 | N/A 2.814 in | N/A 2.563 in | N/A 2.250 in | N/A 0.313 in | N/A 0.60 lb | 
| H40H17 | N/A 17 | N/A 2.975 in | N/A 2.721 in | N/A 2.397 in | N/A 0.313 in | N/A 0.60 lb | 
| H40H18 | N/A 18 | N/A 3.136 in | N/A 2.879 in | N/A 2.567 in | N/A 0.313 in | N/A 0.60 lb | 
| H40P18 | N/A 18 | N/A 3.136 in | N/A 2.879 in | N/A 2.567 in | N/A 0.313 in | N/A 1.4 lb | 
| H40H19 | N/A 19 | N/A 3.296 in | N/A 3.038 in | N/A 2.715 in | N/A 0.313 in | N/A 0.8 lb | 
| H40P19 | N/A 19 | N/A 3.296 in | N/A 3.038 in | N/A 2.715 in | N/A 0.313 in | N/A 1.30 lb | 
| H40H20 | N/A 20 | N/A 3.457 in | N/A 3.196 in | N/A 2.883 in | N/A 0.313 in | N/A 0.90 lb | 
| H40P20 | N/A 20 | N/A 3.457 in | N/A 3.196 in | N/A 2.883 in | N/A 0.313 in | N/A 1.30 lb | 
| H40H21 | N/A 21 | N/A 3.617 in | N/A 3.355 in | N/A 3.033 in | N/A 0.313 in | N/A 0.90 lb | 
| H40P21 | N/A 21 | N/A 3.617 in | N/A 3.355 in | N/A 3.033 in | N/A 0.313 in | N/A 1.50 lb | 
| H40H22 | N/A 22 | N/A 3.778 in | N/A 3.513 in | N/A 3.201 in | N/A 0.313 in | N/A 1.000 lb | 
| H40P22 | N/A 22 | N/A 3.778 in | N/A 3.513 in | N/A 3.201 in | N/A 0.313 in | N/A 1.6 lb | 
| H40H23 | N/A 23 | N/A 3.938 in | N/A 3.672 in | N/A 3.351 in | N/A 0.313 in | N/A 1.000 lb | 
| H40P23 | N/A 23 | N/A 3.938 in | N/A 3.672 in | N/A 3.351 in | N/A 0.313 in | N/A 1.700 lb | 
| H40H24 | N/A 24 | N/A 4.098 in | N/A 3.831 in | N/A 3.518 in | N/A 0.313 in | N/A 1.1 lb | 
| H40P24 | N/A 24 | N/A 4.098 in | N/A 3.831 in | N/A 3.518 in | N/A 0.313 in | N/A 1.8 lb | 
| H40H25 | N/A 25 | N/A 4.258 in | N/A 3.989 in | N/A 3.669 in | N/A 0.313 in | N/A 1.30 lb | 
| H40P25 | N/A 25 | N/A 4.258 in | N/A 3.989 in | N/A 3.669 in | N/A 0.313 in | N/A 1.9 lb | 
| H40H26 | N/A 26 | N/A 4.418 in | N/A 4.148 in | N/A 3.835 in | N/A 0.313 in | N/A 1.30 lb | 
| H40P26 | N/A 26 | N/A 4.418 in | N/A 4.148 in | N/A 3.835 in | N/A 0.313 in | N/A 1.9 lb | 
| H40H27 | N/A 27 | N/A 4.578 in | N/A 4.307 in | N/A 3.987 in | N/A 0.313 in | N/A 1.4 lb |