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Amazon.com : PetSafe Martingale Collar with Quick Snap Buckle, 1" Medium, Raspberry : Pet Collars : Pet Supplies
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Amazon.com : PetSafe Martingale Collar with Quick Snap Buckle, 3/4" Medium, Red : Martingale Buckle Collar : Pet Supplies
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FRISCO Solid Nylon Martingale Dog Collar with Buckle, Black, Large: 20 to 25-in neck, 1-in wide - Chewy.com
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