3M Yellow Nylon Insulated Butt Splices - 12-10 gauge - Qty. 100 - Yellow translucent nylon insulation material resists cracking and deformation. Funnel entry for easier wire insertion. Brazed seam will not separate under when crimped. See thru nylon allows for easy crimp inspection. Industry standard Yellow color-coding for 12-10 awg wire. Rated fot use up to 600 volts.