3M Blue Nylon Insulated Butt Splices - 16-14 gauge - Qty. 100 - Blue 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 blue color-coding for 16-14 awg wire. Rated fot use up to 600 volts.