14mm I.D. HSK-100A GUHRING Hydraulic Chuck w/Coolant & Radial Accessed Length Adjustment, 95mm Gage Length HSK-A to ISO 12164-1/DIN 69893-1 | balanced to G2.5 / 25,000 RPM | tremendous clamping force | maximum concentricity deviation 3 um | robust, radial operated length adjustment | 10mm length adjustability | for tool shank tolerance h6 | includes hex wrench for radial length setting | includes hexagon chuck key, Series no. 4912 | order coolant supply set 4949 separately. The use of reduction sleeves greatly improves the usefulness of a hydraulic chuck. Clamp directly on the cutting tool shank or use a reduction sleeve to hold a different diameter tool shank and increase transferable torque by approximately 25%. The reduction sleeve outside diameter must match your hydraulic chuck's nominal inside diameter. Reduction sleeves are available in 6 different O.D.s; 1/2\