Shop Nilight 400PCS 3.9mm Bullet Connectors Male and Female Brass Wire Terminals Connector with Insulation Cover for 22-16AWG Electrical Wiring Motorcycle Motorbike Car Truck Boats in high quality, support 2 year warranty. The male and female bullet connectors are made of high-quality brass tinned material to ensure that the terminals have good electrical conductivity, oxidation resistance, durability, easy wiring, and provide the best current flow.