ER16 GUHRING Sealed Collet Chuck (2.5 - 10mm Range) HSK-32C Shank 60mm Gage Length Suitable For Coolant Pressure Up To 100 bar Due to Special Internal Coolant Clamping Nut Which Must Be Used With Sealing Ring, Series No. 4335, Sold Separately | With Hex Nut | Purchase Wrench Separately, Guhring Item No. 9049130160000. HSK-C to ISO 12164-1 / DIN 69893-1 | Balanced to G2.5 / 25,000 RPM | Central Coolant Through | Includes Length Adjustment Screw. Series No. 4323, Order Code 016.0320. Made in Germany, Guhring Part #9043230160320