Replace the shoulder plates on select Dainese jackets with the Dainese Aluminum Shoulder Sport Plates. Easy-fit light thermoformed aluminum shoulder plates. Everything needed is included in this kit. Contains allen wrench, 2 plates and 8 screws. Some jackets require extra work from the inside of the jacket to attach. You may have to cut and resew inner liner if nuts holding the shoulder plate get pushed inside jacket. Measures approximately 4.1" x 2.2"