Use the code wheels in this special spy master kit to write secret messages. Learn techniques used to crack secret messages.
Make an intruder detector and learn how to make a lie detector.
- Two printed code wheels
- 3v battery holder
- Hook up wire
Kit requires 2 x AA batteries - not included.
Spy Master Specifications
Spy Master Reviews
Be The First To Review This Product!
Purchased this product? Help other cool people shop smarter by writing a review for this.
More Cool Things From This Category
Most popular sellers from the SimplyCool category: