1、4 DIFFERENT PUZZLE PIECES: Drill and screwdriver toy set contains four puzzle pieces with different colors and shapes, which can provide more design space for children and let them give full play to their imagination in the game. 2、6 MUSHROOM NAILS: Drill and screwdriver puzzle kit has six kinds of mushroom nails with different colors. Children can make various models by fixing them with screws and nuts, thus stimulating children's spatial imagination and creativity. 3、IMPROVE LEARNING INTEREST: Drill and screw driver tool building toys kit can improve children's insight into science, technology, engineering and mathematics. Learning from games has greatly improved children's interest in learning. 4、COLORFUL ACCESSORIES: The accessories are colorful, and there are more than 45 kinds of colorful patterns with a puzzle manual. Children can make models according to the patterns in the manual or use their imagination to make models. 5、SAFE PLAYING: Mosaic drill set is made of ABS plastic with polished edges. Toy drill is powered by 2x1.5AA battery (excluding battery), which can rotate in both directions, and the speed is slow, so there is no need to worry about hurting children.