This Jacobs ANSI tap clutch type collet system no.1 has 1/8-Inch Capacity and a .313-Inch tap shank and .234-Inch drive square. The Jacobs ANSI tap clutch type collet features a quick change style allowing taps to be changed quickly. The Jacobs ANSI tap clutch type collet's rigidity provides reliable and easy use for general tapping applications while the torque structure limits can prevent breakage. The Jacobs ANSI tap clutch type collet is used for drilling, radial drilling, milling and air tapping and is suitable for CNC turning centers and machining centers with reversible spindles. Like all of Jacobs chuck's products the Jacobs ANSI tap clutch type collet includes a one year factory warranty