... package:pvc bag,plastic box,wooden case max shank flat drill bit set size(mm):10, 12,16,18,20,25 ... *cutting flutes are engineered for optimum chip ejection so drill will not bindand burn out*for drilling accurate,splinter-free ... soft wood,playwood and hardwood*use in hand drills,electric protable drills,drill presses and lathes if you have any spacial inquires ...