Hsk-63A Guhring High Precision Modular 6 X 6 Alignment Adapter, 60Mm Mounting Flange, 60Mm Gage Length Provides Quick + Simple Ultra-Fine Axial & Radial Adjustment For Superior Concentricity And Alignment Error Compensation | Designed For Optimal Ultra-Fine Machining Operations Using Guhring's 6 X 6 Modular Hydraulic Chuck Flanges, Shrink Fit Flanges, Hpc Milling Chuck Flanges Or Hsk Adaptor Flanges | Hsk-A To Iso 12164-1 / Din 69893-1 | Balanced To G6.3 / 15,000 Rpm | 6 Balancing Threads M6 | Suitable For Mql & Conventional Cooling | For Coolant Through The Tool Applications You Must Order Intermediate Coolant Supply Sleeve Series No. 4716 Separately |Order Conventional Coolant Supply Set Series No. 4949, Or Mql Coolant Supply Set Series No. 4939 Or 4940 Separately | For Highly Accurate Alignment Of All Modular Flanges 6 X 6 | Cooling Lubricant Without Loss Or Flow Disruption Due To Use Of An Intermediate Tube. Series No. 4723, Order Code 060.0630. Made In Germany, Guhring Part #9047230600630