All rackets, no balls

When you need multiple items, components, or skills to complete a task, but your missing one of them.

Harry had the proper dance costume but his dance moves sucked. He was all rackets, no balls.

all rackets, no balls

When you need two multiple objects, or skills to complete a task but are missing one of them.

Harry had a proper dance costume but his dance moves were lacking. It was all rackets, no balls.