Shrink Fit Tool Holder and Adapter, Hole Dia. 7.94mm, Taper Size CVKV40, Shank Dia. 21.00mm, Projection 88.90mm, Nose Dia. 21.00mm, Coolant Fed Coolant Through, Balanced to RPM G 2.5@20000 rpm, For Use With Carbide and HSS Tools, Series HSK100A