Herm Sprenger Chrome Plated Steel Giant Schnauzer Fur Saver Collar - 51604 (02) 1/6 inch (4 mm) - Size 25 inch (63 cm) for Dogs with Neck Size of 22-23 inch (55-58 cm) Steel chrome plated Corrosion resistant Smooth surface 2 O-rings for leash attachment Fits Giant Schnauzer well