Toolholder chuck with VDI shank, brand Caporali Gaetano, designed for insert drill bits with cylindrical shank, form E1, manufactured in accordance with DIN ISO 10889-6 (formerly DIN 69880). This system is suitable for use on CNC lathes equipped with VDI turrets, either static or driven, and enables quick and efficient tool changes, enhancing productivity and machining flexibility.