According to my experience, this assortment of polyolefin heat shrink connectors is a great solution for my industrial electrical needs .The connectors are of high quality and easy to install, saving me on time and efforts. The superior insulation offered by the connectors enhanced the safety of my wiring connections, providing long-lasting results. This industrial and scientific product is indeed a life-saver when it comes to wiring and connecting. The only downside is that the assortment might not be ENOUGH for larger projects, requiring me to purchase more..