This Cardo Systems Line 2nd Helmet Kit includes three ear pieces and two mouth pieces for use with motorcycles and scooters. The kit is designed for use with the HJ13 model and is made in the United States. It is perfect for those looking to upgrade their audio, communication, and navigation equipment while riding. The brand Cardo Systems is known for its high-quality audio equipment, and this helmet kit is no exception. The ear pieces provide a comfortable fit and clear communication, while the mouth pieces allow for easy use of voice commands. This kit is a great addition for any rider looking to enhance their riding experience.