THIS HAUSER A40.140.18 – HSK40A SHRINK CHUCK IS SUPPLIED AS A SET OF FOUR UNITS, FEATURING AN HSK40A INTERFACE FOR SECURE AND COMPACT HANDLING. KEY DIMENSIONS INCLUDE AN 18MM CLAMPING DIAMETER (D1) AND AN OVERALL LENGTH (LENGTH A) OF 3.54 INCHES. ADDITIONAL SPECIFICATIONS ARE DIAMETER 2 (D2) AT 27.5MM, DIAMETER 3 (D3) AT 33.5MM, AND A LENGTH L OF 2.1 INCHES. THE ITEM IS IDENTIFIED AS A SHORT VERSION OF THE SHRINK CHUCK.