NimCorís air-operated mechanical chucks provide a strong, air-assisted grip and maximum torque that is ideal for shaftless applications, according to the company. These rugged, air mechanical core chucks are designed for heavy-duty applications, providing positive, bladderless gripping action to secure the core to the chuck with no slippage. Air mechanical chucks from NimCor are available to fit 3 in. and 6 in. cores. Special 5 in. and 8 in. chucks and a 3-6 in. step chuck are also available.