With a durable, pure copper construction and electro-tin plating for exceptional corrosion resistance and a strong connection, the step down butt connectors are sure to offer a long service life. With solderless connections you can save time and maximize convenience. Non-insulated butt connectors are designed with a bare seamless construction to maximize the crimp strength of the product. Non-insulated Step Down Butt Connectors provide a simple installation that is both fast and easy.