Nylon Insulated Butt Splice Connectors 12-10 Awg - Nylon Insulated Butt Splice Connectors for electrical work.Nylon Insulated Butt Splice Connectors 12-10 Awg features include: Nylon Insulated Butt Splice Connector Material: High Strength Electrolytic Tubular Copper Electro-Tin Plated for corrosion