Content: 1 pcs hand drill+9 pcs drill+1 pcs chuck+1 pcs key,The bits radius are 1.5 mm,2.5 mm,3.5 mm,4.5 mm,5.5 mm,6.5 mm,7.5 mm,8.5 mm,10 mm,Material: The drill is made of High Speed Steel and the hand drill in made of Cast Steel so the hardness is strong enough.The hollow anti-skid handle is made of plastic, in which you can store the drill to be used,Convenient: The design of double pinion makes the hand drill more stable and flexible to improve work efficiency.And the key chuck can make you to tighten the bit and will not let it slip,Usefulness: This hand drill is suitable for DIY lovers,carpentry and model lovers.It can also help your child's interest in DIY and develop hands-on ability,Application: Suitable for drilling wood, bamboo,plastic, pvc,soft thin metal, copper, aluminum,glass fiberboard, circuit board and acrylic.Not suitable for drilling hard metal materials, ceramic tiles, masonry, concrete, etc