When you need reliability, you need the 3M Scotchlok Color-Coded Large Ring Tongue Terminal. It's made of durable electrolytic copper that's highly conductive, plus a tin-plated finish that's non-corrosive. Together, they provide a reliable and safe ring tongue with a secure fit - every time. This Scotchlok terminal can withstand temperatures of -40 to 221 degrees F (-40 to 105 degrees C).