NBTERM2 Square Terminal Cup with Spring Loaded Binding Post Connectors

Product is straight forward, just make sure you cut the hole to the right size, which is a 2-1/2

Solid product would buy again

Quality not up to par

This this isn't good enough quality for a company that takes pride in their products. It's clearly a cheap product they sell, but isn't their own. It's what you would expect to find from any seller on Amazon. Except this takes a week and a half to get to your house.