Interesting Scientific Experiment Technology Small-scale Manufacturing Handmade Material Variable Speed Car Model

Perpect gift for childen to learn knowledge through this experiment, to enjoy DIY thus enhance their hand-making ability. Features: Kids can not only play with it bu also know some knowledge from it. Learn physics knowledge with fun. wooden material made with no toxic. It can be DIY the colour by hand, perceiving the color. To improve kid's ability of hand-making and parent-child interaction. Specification: Packing Size: 280*200*80mm/11.0*7.9*3.2in（Style 1） 390*275*5mm/15.4*10.8*0.2in（Style 2） 295*30*5mm/0.3*1.2*0.2in（Style 3） 275*200*30mm/10.8*7.9*1.2in（Style 4） 300*295*5mm/11.8*11.6*0.2in（Style 5） Package Weight: 59.5g/2.1oz（Style 1） 92g/3.2oz（Style 2） 130g/4.6oz（Style 3） 64.5g/2.3oz（Style 4） 163.3g/5.8oz（Style 5） Packing List: 6 wedges of different shapes(Style 1) 1 set of plate, 1 manual, 7 steel balls (1-2 more are spare parts)(Style 2) 1 set of plate, 1 manual, 1 axle, several screws and nuts, several washers, 1 compass(Style 3) 4 axles (2 long, 2 short), 4 plasti-c wheels, 1 motor, 1 fixed frame, a number of screws and nuts, washers, 2 leather bands, a number of belt pulleys, 2 metal angle frames, 2 5 batter-y boxes, 1 manual(Style 4) 1 set of plate, 1 manual, 1 motor, 2 No.5 batter-y boxes, 2 copper pillars, a number of screws and nuts, 5 fixed rubber sleeves (with 1-2 spare rubber sleeves)(Style 5)

Kids can not only play with it bu also knowsome knowledge from it. Learn physics knowledge with fun.wooden material made withno toxic.It can be DIY the colour by hand,perceiving the color.To improve kid's ability of hand-makingand parent-child interaction. Specification:Packing Size:280*200*80mm/11.0*7.9*3.2in（Style 1）390*275*5mm/15.4*10.8*0.2in（Style 2）295*30*5mm/0.3*1.2*0.2in（Style 3）275*200*30mm/10.8*7.9*1.2in（Style 4）300*295*5mm/11.8*11.6*0.2in（