The Extra-Care Probes were built specifically for those who smoke in areas of high humidity such as in Washington or Canada or who use a water pan when smoking.  They are water-resistant and color coated and have double cabling for heavier lids.  With the 6" wires it is easy to get lost in the tangled mess, the color coating makes it easy to find which probe is in which meat and which jack (1, 2, 3, or 4).  The Extra-Care Probes make using the Tappecue that much more simple and easy.