SNAPPY’s quality Quick-Change Tools are manufactured at close tolerances to fit the precision Festool® Centrotec® chuck found on most Festool® drills, including the very popular Festool® CXS Cordless Drill. The unique drive shank of these tools is designed to perfectly engage the Centrotec® chuck for extremely close axial alignment of the bit and output shaft of the drill to reduce run-out and create maximum torque transfer between drill and bit.