I bought banana plugs from a different brand online and was disappointed to find that they wouldn't fit into my A/V receiver, even with a lot of force. Many online reviews noted that they were hard to insert. Some people suggested crimping the tips with pliers, and a few even suggested tapping them lightly with a small hammer. No thanks. I returned them and ordered plugs from Sewell. They fit snugly but without using much force and they appear to be of higher quality than the others. I highly recommend Sewell.