ARB's new CKMTA12 twin on-board compressor kit were designed to fill the market need for a compact sized yet high-volume compressed air source to suit the high-volume airflow needs of most air powered tools, and also to suit the actuation and control needs of the ARB Air Locker, and the harsh and demanding environment of the ARB Air Locker user. IP55 sealed brushless DC cooling fan and anodized motor mounting brackets effectively dissipate heat from the motors, heads and electronics allowing for a 100% duty cycle & 6.16 CFM. Air Locker Manifold Kit 171503 is required to mount the lockers solenoids.