KONG Extreme Dog Pet Toy Dental Chew (2 Pack), Large Ultra-strong, ultra-durable, black rubber compound is recommended for the most powerful chewers Used worldwide by police, drug enforcement and military K-9 teams; Also used by Schutzhund and AKC competition trainers Perfect for stuffing with KONG treats; Helps reduce boredom and separation anxiety for powerful chewers Unpredictable bounce for games of fetch Made in USA