Check the listing for details. DIY SIMPLE MOTOR ALL-IN-ONE KIT #9 - 4 DIFFERENT MOTORS W/ SINGLE SWITCH CONTROL. Condition: New. Listed at 56.95 USD. DO IT YOURSELF !!!SIMPLE MOTOR KIT All-in-One kit with switch: four motors of Kit #8 with a single switch control - KIT # 9 All-in-One kit with the switch: includes all parts required for assembly of 4 brushless motors where you can quickly switch between them.This is a perfect kit if you want to experiment with different configurations and learn how all these motors work. It is essentially Kit #8 where with a simple turn of the knob you can switch between four different motors:• R – Regular reed switch motor• T – Reed switch motor with the transistor• H – Hall Effect motor• O – Motor with optical control NOTE: YOUR KIT MAY BE BASED ON TWO SWITCHES INSTEAD OF ONE (BOTH WILL BE INCLUDED). THIS MOTOR USES STANDARD AA SIZE BATTERIES (NOT SUPPLIED). INCLUDED JUMPER WIRE ALLOWS TO EXPERIMENT WITH 3 DIFFERENT VOLTAGES: 3, 4.5 AND 6 VOLTS. SOLDERING IRON REQUIRED FOR ASSEMBLY. BASED ON AWARD WINNING PROJECT GREAT FOR SCIENCE FAIR PROJECT, HOMESCHOOLING, SCOUTS MEETING, BIRTHDAY PARTY, ETC. - YOU NAME IT! OUR MOTOR KITS PROVIDE LOTS OF FUN AND GREAT LEARNING EXPERIENCE PERFECT EDUCATIONAL TOOL TO LEARN BASICS OF ELECTRICITY, MAGNETISM AND ELECTRIC MOTORS. WE HAVE IT ALL! DETAILED ASSEMBLY INSTRUCTIONS PROVIDED ONLINE FOR EVERY MOTOR KIT. PLEASE CHECK OUR OTHER MOTOR KITS