HS-12A06HA 12" 3-jaw, high-speed, open-center hydraulic chuck with A2-6 adapter plate and M85x2.0 threaded draw nut; 310mm O.D.; 91mm bore; 34 ~ 304mm clamping range; 10.6mm jaw stroke on diameter; 23mm plunger stroke; 144KN maximum static gripping force; 1.5x60° master jaws serration; 3300 maximum rpm; standard equipment for Haas Automation ST-30, TL-25, and SL-30