It is a dark green baseball hat with a light yellow visor. It has a steel funnel on the top, where fruits and vegetables go, and a smaller funnel on the front where the juice pours out.
Role in episode
After Mr. Krabs finds out that the soda drinking hat is worth a lot of money, he buys a bunch of hats to trade SpongeBob for it, one of which is the juicer. SpongeBob shows some interest, but ultimately does not want it and sticks to the soda drinking one.