Family time means combining multiple card decks to accommodate larger games. When your hands are worn and the cousins' hands are too little to shuffle large decks of cards, use the Jigitz Empty Automated Card Shuffler Machine to mix cards quickly and effectively for your next round. For cards up to 2.5 by 3.5 inches (6.3 x 8.8cm). these electric card shuffler systems are compatible with Uno, Phase 10, Skip-Bo, and classic playing cards. Each shuffle cards machine holds up to 6 standard decks of cards (roughly 312 cards total). Install batteries in the base, place an even number of cards on each mixing plate, then push the mixer button to fold the cards into each other. Host poker tournaments with the Jigitz Automatic Casino Deck Card Reshuffle Machines. Batteries and cards not included. Warning: This product can expose you to chemicals which is [are] known to the State of California to cause cancer and birth defects or other reproductive harm.