HAIMER A63.1H10.11/4Z Hydraulic Tool Holders & Chucks; Shank Type: Cylindrical ; Taper Size: HSK63A ; Hole Diameter (Inch): 1-1/4 ; Shank Diameter (Inch): 1-1/4 ; Nose Diameter (Decimal Inch - 4 Decimals): 2.3620 ; Clamping Depth (Decimal Inch): 2.55