Pet Tractor Dog Traction Rope Machine Pet Supplies Telescopic Automatic Key Telescopic Traction Belt 5M3M With Tractor Round Retractable function design, the leash can auto stretch out and draw back. Push lock design allows for length adjusted easily, good for any size. Big handle for easy gripping, even with mittens/gloves. Strong retractable cord is very durable with high quality. To achieve safety and freedom walk with the perfect combination of the master control.