With a durable, pure copper construction and electro-tin plating for exceptional corrosion resistance and a strong connection, the ring terminals are sure to offer a long service life. With solderless connections you can save time and maximize convenience. Size and gauge is clearly marked on the ring terminal for easy identification and the insulator sleeve is color coded to match. Insulated ring terminals are constructed using nyax heat shrink tube for maximum resistance to moisture and corrosion.