The Hadar Athletic Kettle Bell Handle and Carabiner allows you to mix and match kettle bell weights for your exact requirements. Plus, it turns a set of four weights into a complete set from five pounds to 65 pounds. A low cost accessory that adds to the versatility and usefulness of the Hadar Kettle Bell weight set. Kettle Bells not included with purchase (order separately). Works only with Hadar Soft Kettle Bells.