The transmitter is configurable for stimulation levels from 1 to 100 with the ability to "lock and set" the stimulation level

Does not rust or corrode

5 points of adjustment for size

Detachable sleeve fastens on left or right

Made with heavy-duty sleeve jute

Goughnuts Heavy Duty Black Ring Size:Medium (30-70 Pound Dog) The transmitter is configurable forCarbon reinforced rubber Solid rubber No indicator core Made for power chewers Guaranteed for life Toughest Goughnut ring yet Always supervise your dog chewing [split] The Goughnuts Heavy Duty Black Ring was engineered to give dogs a safer, tough toy. This ring is made from a natural rubber in the USA employing revolutionary carbon reinforcement technology. The new Heavy Duty Ring is the most durable Goughnut yet made for true power chewers under