All in One kit includes more than 325 components and instruction booklet with 241 experiments with video tutorials.KIT CONTENTS: 1pcs Solar Plate 4pcs Toy Motor 2pcs Round Motor 2pcs AA Black Cell Holder 3pcs 4B Fan 1pcs 3B Fan 2pcs 2-Core Wire 10pcs Slide Switch 10pcs ON Off Switch 2pcs White cell holder 4pcs Clips 10pcs Big LEDs 1pcs Super LED 5pcs Bright LED 1pcs Double shaft hobby motor 1pcs Double shaft geared motor 66pcs LEDs Multicolor 60pcs Resistor 1pcs Push Switch 1pcs Transistor 10pcs Small Nut-Bolts 1pcs Small Buzzer 10pcs Ring Magnets 2pcs 1-core wire 1pcs Vibration motor 4pcs AA Batteries 1pcs Screw driver 4pcs Screw 5pcs Spacer 2pcs Long Nut-Bolts 2pcs Small bush 1pcs Long Bush 5pcs Foam adhesive 1pcs 3B Fan round 1pcs Big wheel 2pcs 2B Fan 6pcs Elastic 2pcs Fan belt 2pcs 9v Batteries 2pcs 9v Connector 50pcs Bead Magnets 10pcs Medium Nut-Bolts 2pcs Small Pulley 1pcs Big pulley 1pcs Click Switch 1pcs Big Buzzer 1pcs Copper wire 1pcs Direction control switch 4pcs Copper Plate 4pcs Zinc Plates 1 Instruction manual (Booklet).IMPORTANT NOTE: For some DIY Projects You need to arrange some material or tool at your own Its easily available at your home (Trash)/Local shop. The booklet includes total 241 experiments connection diagram and video tutorials but you can explore and make more projects using this kit.