Dewalt dt81012 holesaw mandrels 14 30mm32 210mm dewalt dt8101 qz this 14 30mm holesaw mandrel from dewalt is useful for fast tool free changeovers the quick release collar prevents lock up of the holesaw on the mandrel enabling easy removal has a diameter range between 14 30mm dewalt dt8101 qz holesaw mandrel 14 30mm