Duncan Yo-Yo Butterfly (3), Trick Book & 10 Strings Deluxe Gift Set Bundle - 5 Pack (Assorted Colors) Deluxe Gift Set Bundle Includes 3 Butterfly Yo-Yo's, 1 Yo-Yo Trick Book & 5 Assorted Replacement Strings! Yo-Yo colors are assorted and will vary Made of Durable Plastic with a Steel Axle For Smooth Spins Great Gift For Beginners or Intermediate The Duncan Yo-Yo Trick Book Features over 60 tricks and is Written By National Yo-Yo Master Steve Brown