The Vise Jaw Protector is for assembling AN hose ends from -4AN to -16AN with two multi-fit ''V'' locations for unique sizes. The Vise Jaw is injection molded from high-impact nylon for strength and durability offering more protection to AN hose ends than aluminum style vise jaws. The loops were also designed to keep it together in one convenient piece that can easily be hung on a hook for out of the way storage.