| (hidden) Pitch Builder | SRT2/3-90 T4 | 
| Bore Diameter | 12 mm | 
| Bore Diameter Tolerance | +/- 0.2 mm | 
| Bore Type | Plain | 
| Center Distance | 41.73 mm | 
| Country of Origin (subject to change) | Japan | 
| Face Width, Overall Length | 6 mm | 
| Finish | Black Oxide | 
| Gear Material & Finish | Black Oxide Coated Carbon Steel | 
| Gear Shape | T4 | 
| Item | Ratchet Gear | 
| Material | Carbon Steel | 
| Maximum Teeth Hardness | 60 HRC | 
| Metric Module Pitch, Ratchet Pitch | 2.09 | 
| Minimum Teeth Hardness | 50 HRC | 
| Mounting Distance | 29 mm | 
| Number of Teeth | 90 | 
| Outside Diameter | 60 mm | 
| System of Measurement | Metric | 
| Teeth Angle | 60  Degrees | 
| Teeth Heat Treatment | Hardened Teeth | 
| Tooth Heat Treatment | Induction Hardened |