| Herm Sprenger Curogan Ultra-Plus Pinch Collar with Center-Plate and Assembly Chain - 3.2 mm x 23 inches Product Description If your pet is allergic to nickel and often suffers from skin irritations he/she will enjoy this Herm Sprenger Curogan pinch collar. The training collar includes a center plate assembly chain 2 O-rings and evenly arranged prongs.... more | | $67.49 FREE shipping go to store |