HERM SPRENGER Ultra-Plus Training Dog Prong Collar, 14-in neck, 2.25-mm wide - Chewy.com
Martingale Partner Stainless Steel Long Link Chain Collar with Limited Traction Effect - (4.0 mm) [HS1041091 Long Link Chain Dog Collar 51614-55] : Prong Collars, Pinch Collars, Dog Training Collars, Curogan Collars,
Herm Sprenger Black Stainless Steel Neck Tech with Click-Clock Buckle [50050-66 Black Stainless Steel Neck Tech Sport Collar with Click-Clock Buckle] : Prong Collars, Pinch Collars, Dog Training Collars, Curogan Collars, Chain
Herm Sprenger Triple Chain Martingale Collar | Dean & Tyler