3M™ Highland™ Color-Coded Locking Fork Is A Lug Connection Terminal That Has A Spring-Like Tongue to Securely Lock Around The Stud. 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.