FORK TERMINALS WITH HEAT SHRINK TECHNOLOGY - Make instant water-resistant and corrosion resistant connections. INDUSTRIAL GRADE HEAT SHRINK TUBING - Shrinks to 1/3 of its original size, and has heat activated adhesive that bonds the connector to the wire. INCREASED CONDUCTIVITY - Pure copper crimp terminals ensure highest current flow. Tin top-layer coating protects these fork connectors against corrosion. VALUE PACK - This kit includes heat shrink fork connectors that will last through numerous projects. LIFETIME WARRANTY - All Wirefy electrical connectors are backed by our best-in-class warranty.