... color available. 1. outside ball is in 5.5cm diameter, with hollow on the ball.2. including ball inside which contact with worms & red liquid ... .4. pop worms & red liquid will come out from outside ball when squeeze it, return back after hands away.5. inside ... parts etc.6. outside ball skind color available.7. packing, 1pc/netbag w/ header, 24pc/inner, 288pc/ctn. squeeze hollow ball with worms