Spin Drifter Yo-Yo . New ways to play! Duncan's Spin Drifter offers 3 play patterns in one new yo-yo design! Yo-yo, Top, Stack!. BEGINNER to ADVANCED: Duncan's Spin Drifter is equipped for standard play or use the side-spinners to allow the player to hold the yo-yo while spinning. Many new tricks! Invent your own!. Side Spinning Caps: Secured with small ball-bearings, each side of the yo-yo cap spins independently of the yo-yo. More play more tricks.. Stack and Spin: Much like fidget spinners, the Spin Drifter's sidecaps interlock to allow stacking while spinning. Simply remove the string and wind up like a gyroscope; then pull! How many can you stack while spinning?. LONG SPIN: The transaxle axle design allows for long spin times. For easy string changing, simply unscrew the sides..