Xcellent Global Hands Free Bicycle Dog Leash for Outdoor Pet Exercise/ Training/ Jogging/ Cycling PT010 Hands Free Dog Leash Bike Attachment Allows You to Ride Your Bike While Walking Your Furry Friend, Prevents dog from beening entangled in wheel and keep balance! Easy installation/removal. Can be installed on a bike in less than 5 minutes. Can be easily disconnected from a bike by screwing and unscrewing in seconds. Compatible with any kind of bike. Internal springs in the Xcellent Global Bicycle Hands Free Leash provide shock absorption if your dog should jerk away and drag, making it easier to keep your balance. Simply disengage the bike leash and use it as a regular leash. Suitable for small/medium dogs. Made of durable metal. Metal Length: 17.9 inch, diameter: 0.8inch; Leash length: 22inch and can stretch up to 35 inch; Whole product can stretch up to 55 inch. Flexible Lengthening feature for force absorption. Package Includes: 1 x Bike Exerciser Leash; 1 x wrench