In the case of DEWALT’s impact-ready hole saws, their construction allows for up to 5X longer use than competitors’ models, according to DEWALT literature. Officially rated to withstand 2000 in-lbs of torque and using a hex shank, these may be used with all impact drivers. In addition, an ejection spring allows for easier ‘kick-out’ of your plug. They cut to a depth of 3/8”. Impact-ready Dewalt hole saw is made in Japan.