Amazon.com description: Product Description: With regular reports in the equestrian media of horses transformed by the change of a bit, and how a particular top name in the sport has successfully converted a horse to a new type, the equestrian world will welcome this thorough work by respected expert Elwyn Hartley Edwards. The author give details of every known bit in the world, with photographs and working diagrams to show how each group works. Covering everything from the simple snaffle to the Western bosal, it is totally international in content and approach. Elwyn provides a fascinating insight into the history of the bit and explores the latest developments in design and manufacture, with details of subsidiary tackle and bitting for different sports and activities.