Fair-Rite 61 Material Snap-It REVAMP Kit contains a selection of 61 material Snap-its. The 61 material is a high-frequency suppression material, which suppresses noise from the 200MHz to 2GHz range. This material features high stability performance over varying temperatures and contains Snap-on ferrite cores in various sizes to fit most cables. The 61 material offers near-solid core performance without significantly increasing size due to precision manufacturing. Typical applications include automotive/Electric Vehicles (EVs), industrial equipment, and smart home.