4.Notes:We can designand manufactureas customer's requirementaccording toGB/ISO/DIN/JIS Standards. 5.Specifications(mm): Pitch×RollerDia.OutsideDia.OverallLengthHoleDia.9.525×6.3570602712.7×8.51807015.875×10.1690853219.05×11.9110010025.4×15.87511511531.75×19.051401404038.1×22.2314015044.45×25.415018050.8×28.5816020063.5×39.68180240 We can provide all kinds of gear hobs. gear shaper cutters and gear shaving cutters.If you have any requirement, pls contact us. We'll try our best to satisfy you. You're welcome every time, all the time.