Quick change holders are one of the most important features of a FlexArm tapping arm. The torque holder contains a built in clutch that prevents broken taps. It is important to note that FlexArm tapping arms do NOT require modules, only torque holders. With each arm purchase, you receive 5  torque holders for free. 
 
Fixed Quick Change Holders (Size 4) for models GH-45 and GH-60