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Amazon.com : Herm Sprenger Quick Release Dog Training Collar Black Stainless Steel No Pull Collar Easy Leather Buckle Release Unique Tactical Look for Small Dogs (12-17" Neck 2.25mm Links) : Pet Supplies
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Amazon.com : Herm Sprenger Stainless Steel Dog Collar - Label 1/9 inch (3 mm) - Size 22 inch (55 cm) for Dogs with Neck Size of 19-20 inch (48-50 cm) : Pet Supplies
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Amazon.com : Herm Sprenger Ultra-Plus Prong Dog Training Collar, 3.0 mm x 18" Neck Size, 3.0 mm x 20" Chain Length, Steel Chrome Plated Dog Prong Collar, Pinch Collar for Dogs, Dog
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