The E-Collar Technologies CPAD-006 is an enhanced contact point for the E-Collar Technologies BP-504 Barkless Pro. It is designed to distribute the pressure over a larger area, making the wearing of the collar more comfortable and improves contact with the skin. Being made of brass, it is ideal for dogs with skin allergies or sensitivities. These are longer probes best used on dogs with long coats (will need to use the middle probe extension cap included with the BP-504).