3M™ Highland™ Color-Coded Block Fork Is A Lug Connection Terminal That Ensures An Ideal Fit While Offering Reliable and Safe Performance. The Terminal Has A Vinyl-Insulated, Butted-Seam Barrel and Withstands Temperatures Of -40 to 221 Degrees F (-40 to 105 Degrees C). Electrolytic Copper Construction Offers Good Conductivity and A Tin-Plated Finish Resists Corrosion.