What is the insulation rating for the model # CMHT81714? Wilson October 03, 2020 20:01 Insulation ratings are for when the actual pliers are insulated. These pliers are not insulated, they crimp insulated and non insulated wire crimps. Related articles What are the part #s for the rail Extension kits for the new CMX garage door openers? Comments 0 comments Please sign in to leave a comment.