Choker Prong/Pinch/Spike Chain Collar 20" for Dogs up to 250 Lbs A spiked prong collar for dogs is the ideal training solution to teach your dog discipline and obedience quickly Obedience collar works well for controlling large, strong dogs and large animals, can handle up to 250 lbs High quality chain is welded shut for maximum strength, flexibility and durability Feature smooth and rounded prongs to prevent injury to the dog while simultaneously teaching obedience Slips over dog's head for easy on, easy off- measure the circumference of dog's neck +2" for perfect fit