3M™ Scotchlok™ Male Disconnect, Vinyl Insulated Butted Seam Bullet Style MVU18-156DMK-A, 1000/Case. 3M™ Scotchlok™ Vinyl Insulated Butted Seam Bullet-Style Male Disconnect offers superior holding force while allowing for quick and easy disconnect. The snap plug has a vinyl-insulated, butted-seam barrel and withstands temperatures of -40 to 221 degrees F (-40 to 105 degrees C). Its durable brass construction offers good conductivity and a tin-plated finish resists corrosion.