• These chucks are available with 3 jaws and 6 jaws and are referred as AAC-3 and AAC-6 respectively. These are used where same size of job is to be held repeatedly and accuracy desired is very high. The chuck accuracy can be adjusted within 0.005 mm with the help of micro-adjustment screws. The repetitive accuracy available with these type of chucks is within 0.013 mm. These chucks are used for tool room and grinding shop work. One set of reverse Jaws, Mounting Bolts, Allen Key, Operating Key and Inspection Report is provided with each chuck.