MH-218A11HA 18" 3-jaw, high-speed, mega bore hydraulic chuck with A2-11 adapter plate and [M175x3.0] threaded draw nut; 457mm O.D.; 166.5mm bore; 73 ~ 457mm clamping range; 11.5mm jaw stroke on diameter; 25mm plunger stroke; 180KN maximum static gripping force; 1.5x60° master jaws serration; 2000 maximum rpm; standard equipment for Haas Automation SL-40B