Inserted Blade Gear Hob: Specifications(mm): ModuleOutsideDia.OverallLengthHoleDia.1017516640111801761218313185193501420515193208162152361823025660202503002230039580We 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.