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Amazon.com : Herm Sprenger Black Stainless Steel Prong Dog Training Collar with Swivel Ultra-Plus Pet Pinch Collar No-Pull Collar for Dogs Anti Pull Training Collar Made in Germany 4mm x 25in Small :
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Amazon.com : Herm Sprenger Black Small 16" x 2.25mm 12" Prong Training Collar, One Size : Pet Pinch Collars : Pet Supplies
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