D-30mm d-25.3mm b-6mm N 0. Of splines(Z) -6. Rectangle Spline Shaft Hob 25.3x30x6 Z-6. Type 1- applied to spline shaft centered according to major dia(centering on the outer diameter- D). Accuracy – class B. Outside diameter Do – 70mm. Hole diameter dh- 27mm. Height h- 61mm. Material – T1 HSS(P18-USSR). Steel T1 HSS: hardness – 63Rc, tungsten (W) – 18%, offers 25% longer run times than M2 HSS. Made in USSR. For other countries please contact me to get the transport cost. The parcel will be delivered to you National Postal Service. The item “Rectangle Spline Shaft Hob 25.330×6 z-6 1 HSS USSR Parallel Spline Side Hob” is in sale since Monday, April 1, 2019. This item is in the category “Business & Industrial\CNC, Metalworking & Manufacturing\Metalworking Supplies\Other Metalworking Supplies”. The seller is “pilotbv” and is located in Dnepropetrovsk, UA. This item can be shipped worldwide.