TKDMR 10Pcs Insulated 4mm Banana Jack Female to Female Banana Socket Connectors Coupler for 4MM Banana Plug Extension Adapters

welcome to a new vlog this is a weekend video and as usual weekend videos are shorter than the ones I post on Tuesdays but today we're going to be talking about four millimeter banana connectors and test leads that I use on the bench for the past few years I've been using this style of four millimeter banana plug to build my test leads and silicon wires of different gauges I was getting the connectors from Aliexpress for cheap and at first they seemed okay but what you see here is a new connector never used let me show you how one that's been used for the past three years looks like so this is the one that is three years old and as you can see there is quite a difference especially on the surface on the finish the coating of this connector and you might think this is the word I inflicted on the connector but to be honest I don't think this connector got more than ten insertions per mont