Single Bladed. Self-stripping, Auto Tap Connectors, Flame Retardant. For use with 16-14 Gauge wire. These 3M ScotchLok Auto-Tap heavy-duty self-stripping connector are ideal for equipment where tap, in-line and pigtail splices are required. UL listed for 300 volt tap splice. Available in Red, Blue, White, and Yellow - Choose between 100 and 1000 connectors per box.