What are those things that are like a boxing glove attached to this spring thing called?

Question

What are those things that are like a boxing glove attached to this spring thing called?

Answer 1

Good question, I never thought of that. So I called up Twin Cities Magic and Costume Company ([phone]), and asked them. There is no name for it. The owner told me it is only referred to by describtion.

Answer 2

A-Boxing-Glove-Extender-Thing