Electrically connects a (tap) wire end to a through (run) wire and insulates the connection. Designed for control circuit wiring, fixture wiring, appliance wiring, signal and PA systems, automotive/boat/RV wiring. Flame retardant. Maximum insulation O.D.diameter of 0.120 inches (3,05 mm) and a operating temperature of 221(deg)F (105(deg)C). The suggested application tool for this connector is the E-9BM Crimping Tool.