- Pressure angle 20° - Max length from 400 to 1800 depending on module - 1 metre lengths can be joined end to end - Materials: Module 0.4 to 0.7 mild steel Module 0.8 to 2.0 steel 60C40 or C35/C45 - Max. pitch error up to module 0.7: 1mm/300mm Max. pitch error from module 0.8: 0.1mm/300mm Option - Other lengths available for quantities of 5 or more, please contact us